{"id":6265,"date":"2026-01-21T14:20:04","date_gmt":"2026-01-21T13:20:04","guid":{"rendered":"https:\/\/www.smrekovit.si\/?p=6265"},"modified":"2026-09-28T12:27:28","modified_gmt":"2026-09-28T10:27:28","slug":"smrekova-smola-in-smola-bosvelije","status":"publish","type":"post","link":"https:\/\/www.smrekovit.si\/en\/smrekova-smola-in-smola-bosvelije\/","title":{"rendered":"Spruce resin and Boswellia resin \u2013 how do they differ?"},"content":{"rendered":"<h2 id=\"smrekova-smola-in-smola-bosvelije-primerjava-na-kratko\" class=\"wp-block-heading\">Spruce resin and Boswellia resin \u2013 a brief comparison<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    <strong>Spruce resin and Boswellia resin are both natural tree resins,\n    but chemically they are not simply two versions of the same material.<\/strong>\n    Spruce resin comes from Norway spruce (<em>Picea abies<\/em>), whereas\n    Boswellia resin is produced by different species of the genus\n    <em>Boswellia<\/em>. They differ both in the structure of the resin material\n    and in their main groups of non-volatile constituents.\n  <\/p>\n\n  <div class=\"smrekovit-table-scroll\" role=\"region\"\n       aria-label=\"Comparison of spruce resin and Boswellia resin\">\n    <table>\n      <thead>\n        <tr>\n          <th scope=\"col\">Comparison<\/th>\n          <th scope=\"col\">Spruce resin<\/th>\n          <th scope=\"col\">Boswellia resin<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <th scope=\"row\">Botanical origin<\/th>\n          <td><em>Picea abies<\/em>, family Pinaceae<\/td>\n          <td>Various species of the genus <em>Boswellia<\/em>, family Burseraceae<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Type of resin material<\/th>\n          <td>\n            Oleoresin; aged and wound-related resin material can be\n            highly heterogeneous\n          <\/td>\n          <td>\n            Oleo-gum-resin containing oily, resinous and gum or\n            polysaccharide fractions\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Important non-volatile constituents<\/th>\n          <td>\n            Diterpene resin acids and their derivatives; depending on the\n            type of resin, lignans and hydroxycinnamic compounds may also\n            be important\n          <\/td>\n          <td>\n            Boswellic and other pentacyclic triterpenic acids, together\n            with other triterpenoid compounds\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Volatile fraction<\/th>\n          <td>\n            Mainly terpenes; their proportion generally decreases as the resin ages\n          <\/td>\n          <td>\n            Mainly terpenes; composition varies considerably between species\n            and individual samples\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Distinctive research profile<\/th>\n          <td>\n            A strong body of evidence concerns microbes and biofilms, as\n            well as processes related to re-epithelialisation, fibroblasts\n            and wound healing\n          <\/td>\n          <td>\n            A substantial body of research concerns triterpenic acids,\n            inflammatory mediators, immune responses and lipid-signalling pathways\n          <\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p>\n    The difference between the two therefore cannot be reduced to one\n    characteristic compound.\n    <strong>They are two chemically distinct natural systems whose biological\n    profiles partly overlap but also have different areas with the strongest\n    research support.<\/strong>\n    Findings about one resin therefore cannot automatically be applied to the other.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-rank-math-toc-block toc\" id=\"rank-math-toc\"><h2>Table of contents<\/h2><nav><ul><li class=\"\"><a href=\"#smrekova-smola-in-smola-bosvelije-primerjava-na-kratko\">Spruce resin and Boswellia resin \u2013 a brief comparison<\/a><\/li><li class=\"\"><a href=\"#kaj-pravzaprav-primerjamo\">What are we actually comparing?<\/a><\/li><li class=\"\"><a href=\"#kako-se-razlikujeta-po-kemicni-sestavi\">How do they differ in chemical composition?<\/a><\/li><li class=\"\"><a href=\"#kaj-kazejo-znanstvene-raziskave-o-obeh-smolah\">What do scientific studies show about both resins?<\/a><\/li><li class=\"\"><a href=\"#ali-smrekova-smola-in-smola-bosvelije-delujeta-drugace\">Do spruce resin and Boswellia resin act differently?<\/a><\/li><li class=\"\"><a href=\"#ali-ima-kombinacija-smrekove-smole-in-smole-bosvelije-dokazano-prednost\">Does the combination of spruce resin and Boswellia resin have a proven advantage?<\/a><\/li><li class=\"\"><a href=\"#kaj-pa-varnost-in-alergije\">What about safety and allergies?<\/a><\/li><li class=\"\"><a href=\"#katera-smola-je-torej-boljsa\">So which resin is \u201cbetter\u201d?<\/a><\/li><li class=\"\"><a href=\"#pogosta-vprasanja-o-smrekovi-smoli-in-smoli-bosvelije\">Frequently asked questions about spruce resin and Boswellia resin<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"kaj-pravzaprav-primerjamo\" class=\"wp-block-heading\">What are we actually comparing?<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    Before comparing the two, it is important to clarify\n    <strong>what \u201cresin\u201d actually means in a particular study<\/strong>.\n    Spruce resin and Boswellia resin are natural materials, but scientific\n    literature often uses the same general term for quite different samples\n    and preparations.\n  <\/p>\n\n  <p>\n    In the case of <a href=\"\/en\/spruce-resin\/\">spruce resin<\/a>, research may\n    concern fresh oleoresin, aged resin, wound or callus resin, purified resin\n    material, or individual resin acids. These materials can differ\n    considerably in their proportions of volatile terpenes, resin acids,\n    oxidised resin-acid derivatives, lignans and hydroxycinnamic compounds.\n  <\/p>\n\n  <p>\n    Similar caution is especially important with\n    <a href=\"\/en\/frankincense\/\">Boswellia resin<\/a>. Studies may investigate\n    raw oleo-gum-resin, ethanolic or other extracts, standardised extracts,\n    essential oil, or individual boswellic and related triterpenic acids.\n    Chemical profiles also differ substantially between species of the genus\n    <em>Boswellia<\/em>.\n  <\/p>\n\n  <p>\n    In this article, references to <strong>spruce resin<\/strong> and\n    <strong>Boswellia resin<\/strong> therefore generally mean the natural resin\n    materials and their characteristic chemical groups. Where a finding comes\n    from a study of an extract, an isolated compound or a particular\n    preparation, it should be understood as evidence about that specific\n    material rather than automatically about the whole resin.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n\n<h2 id=\"kako-se-razlikujeta-po-kemicni-sestavi\" class=\"wp-block-heading\">How do they differ in chemical composition?<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    The greatest chemical difference between spruce resin and Boswellia\n    resin lies in the <strong>structure of their non-volatile fractions<\/strong>.\n    In spruce resin, diterpene resin acids and their modified forms are\n    particularly important, whereas a major characteristic part of\n    Boswellia&#8217;s non-volatile chemistry consists of pentacyclic triterpenic\n    acids. In both materials, however, the actual composition is considerably\n    more complex.\n  <\/p>\n\n  <h3>Spruce resin does not have one fixed composition<\/h3>\n\n  <p>\n    Fresh spruce exudate is an oleoresin containing volatile terpenes and a\n    non-volatile resin fraction. Characteristic non-volatile constituents\n    include <strong>diterpene resin acids of the abietane and pimarane\n    types<\/strong>, such as abietic, dehydroabietic, pimaric, isopimaric,\n    levopimaric, palustric and neoabietic acids. Their oxidised derivatives\n    may also be important.\n  <\/p>\n\n  <p>\n    Spruce resin is not simply a mixture of resin acids. In one well\n    characterised purified <em>Picea abies<\/em> resin material, the approximate\n    composition was estimated at about <strong>60% resin acids, 30% lignans\n    and 10% p-coumaric acid<\/strong>. This is not a universal composition of\n    spruce resin, but it illustrates how important other non-volatile groups\n    of compounds can be.\n  <\/p>\n\n  <p>\n    The difference can be even greater in wound or callus resin. Research\n    has shown that such material may be particularly rich in\n    <strong>lignans and hydroxycinnamic compounds<\/strong> while containing\n    very little of the classical resin acids. The term \u201cspruce resin\u201d alone\n    therefore does not define an exact chemical profile.\n  <\/p>\n\n  <h3>Ageing changes the chemical balance of spruce resin<\/h3>\n\n  <p>\n    When resin remains exposed to air, light and the environment, some of\n    the volatile terpenes are gradually lost and the non-volatile fraction\n    becomes relatively more important. Oxidative changes also occur,\n    producing additional resin-acid derivatives.\n  <\/p>\n\n  <p>\n    Aged resin is therefore not simply \u201cfresh resin without its smell\u201d.\n    It may have a <strong>different balance of resin acids, oxidised\n    derivatives, lignans and other non-volatile constituents<\/strong>.\n  <\/p>\n\n  <h3>Boswellia resin has a different chemical architecture<\/h3>\n\n  <p>\n    Resins of the genus <em>Boswellia<\/em> are oleo-gum-resins. In addition\n    to a volatile oily fraction, they contain a non-volatile resin fraction\n    and an important gum or polysaccharide fraction.\n  <\/p>\n\n  <p>\n    The non-volatile resin fraction is characterised especially by\n    <strong>pentacyclic triterpenic acids<\/strong>. Boswellic acids are the\n    best known, but they do not represent the entire chemical profile.\n    Lupeolic, tirucallic and other related triterpenoid compounds are also\n    present.\n  <\/p>\n\n  <p>\n    Boswellia resin also has no single \u201cstandard\u201d natural composition.\n    The proportions of individual compounds differ between\n    <em>Boswellia<\/em> species and between individual samples of the same\n    species. A high level of one boswellic acid therefore does not, by\n    itself, describe the complete chemical or biological profile of the resin.\n  <\/p>\n\n  <h3>The main difference: diterpene versus triterpene chemical space<\/h3>\n\n  <p>\n    The most useful simplification is therefore that\n    <strong>spruce resin is strongly associated with a diterpene\n    resin-acid system, whereas Boswellia resin is characterised by a\n    pentacyclic triterpene system.<\/strong>\n  <\/p>\n\n  <p>\n    This is a substantial chemical difference, not merely a different\n    proportion of similar substances. It provides a sound reason to\n    investigate whether the two resins also have partly different biological\n    profiles. Chemical difference alone, however, does not establish which\n    resin is more effective for a particular purpose.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n\n<h2 id=\"kaj-kazejo-znanstvene-raziskave-o-obeh-smolah\" class=\"wp-block-heading\">What do scientific studies show about both resins?<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    Research exists for both resins, but their\n    <strong>evidence bases are structured quite differently<\/strong>.\n    For spruce resin, much of the evidence concerns microorganisms,\n    biofilms and the biology of skin and wounds, whereas Boswellia research\n    is more broadly developed around triterpenic acids, inflammatory\n    mediators, immune responses and clinical studies of various extracts.\n  <\/p>\n\n  <h3>Spruce resin: from microbes to tissue responses<\/h3>\n\n  <p>\n    One of the best studied areas for spruce resin and related conifer resin\n    materials is <strong>antimicrobial activity<\/strong>. Laboratory studies\n    include bacteria, dermatophytes, yeasts and biofilms. An important finding\n    is that the test system itself can strongly affect the result: a poorly\n    water-soluble resin material may behave very differently in agar than in\n    direct contact or in an appropriate emulsion.\n  <\/p>\n\n  <p>\n    Another important area is <strong>tissue biology<\/strong>. Spruce-derived\n    materials and individual resin compounds have been investigated in\n    preclinical models of re-epithelialisation, keratinocyte migration,\n    fibroblast responses and angiogenesis. This shows that the research\n    profile of spruce resin is not limited to antimicrobial activity.\n  <\/p>\n\n  <p>\n    Spruce resin is also notable for having\n    <strong>direct, although limited, human clinical evidence<\/strong>.\n    Preparations containing Norway spruce (<em>Picea abies<\/em>) resin have\n    been studied in the care of chronic and difficult wounds. This represents\n    a higher level of evidence than laboratory models, but it primarily\n    applies to the particular preparations and conditions that were studied.\n  <\/p>\n\n  <p>\n    A more detailed overview is available on the page about\n    <a href=\"\/en\/spruce-resin\/scientific-research\/\">scientific research on spruce resin<\/a>.\n  <\/p>\n\n  <h3>Boswellia: from extracts to inflammatory and lipid mediators<\/h3>\n\n  <p>\n    A large part of the Boswellia research literature concerns\n    <strong>extracts and individual triterpenic acids<\/strong> rather than\n    raw resin itself. Species are not interchangeable either: most human\n    clinical evidence is associated particularly with extracts of\n    <em>Boswellia serrata<\/em>.\n  <\/p>\n\n  <p>\n    Clinical research is especially extensive in osteoarthritis and joint\n    symptoms, but the mechanistic research landscape is considerably broader.\n    Investigated pathways include\n    <strong>PGE2 and mPGES-1, neutrophil enzymes, cytokine responses and\n    lipid-mediator metabolism<\/strong>.\n  <\/p>\n\n  <p>\n    More recent research is particularly interesting because of its focus on\n    <strong>resolution of inflammatory responses<\/strong>. Some\n    <em>Boswellia serrata<\/em> preparations and individual boswellic acids\n    have been investigated for effects on 15-LOX-1 and the formation of\n    specialised pro-resolving lipid mediators. This provides a broader and\n    more precise picture than the older explanation of Boswellia mainly\n    through 5-LOX.\n  <\/p>\n\n  <p>\n    Direct laboratory data for <em>Boswellia dalzielii<\/em> also include\n    <strong><em>Pseudomonas aeruginosa<\/em>, biofilm formation and\n    LPS-stimulated responses in human immune cells<\/strong>. These findings\n    are particularly interesting when comparing Boswellia with conifer\n    resins, but they cannot automatically be transferred to other\n    Boswellia species or to every preparation made from the resin.\n  <\/p>\n\n  <p>\n    More about species differences, composition and research is available on\n    the <a href=\"\/en\/frankincense\/\">Boswellia resin<\/a> page.\n  <\/p>\n\n  <h3>The evidence profiles overlap, but they are not identical<\/h3>\n\n  <p>\n    The comparison therefore cannot be reduced to saying that spruce resin\n    acts on microbes while Boswellia acts on inflammation.\n    <strong>Both resins have evidence across several biological areas and\n    their research profiles partly overlap.<\/strong>\n  <\/p>\n\n  <p>\n    The main difference lies in where the current evidence is strongest.\n    Spruce and related Pinaceae resins have a particularly well-developed\n    microbial, biofilm and tissue-biology evidence base, while Boswellia has\n    a particularly rich triterpene, immune and lipid-mediator research space.\n    This combination of overlap and difference is what makes direct\n    comparison of the two resins scientifically interesting.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.smrekovit.si\/wp-content\/uploads\/2026\/09\/smola-bosvelije-in-smrekova-smola-izboljsana-1024x768.webp\" alt=\"Boswellia resin on the left and spruce resin on the right on a stone surface\" class=\"wp-image-12394\" style=\"width:700px;height:auto\" srcset=\"https:\/\/www.smrekovit.si\/wp-content\/uploads\/2026\/09\/smola-bosvelije-in-smrekova-smola-izboljsana-1024x768.webp 1024w, https:\/\/www.smrekovit.si\/wp-content\/uploads\/2026\/09\/smola-bosvelije-in-smrekova-smola-izboljsana-300x225.webp 300w, https:\/\/www.smrekovit.si\/wp-content\/uploads\/2026\/09\/smola-bosvelije-in-smrekova-smola-izboljsana-768x576.webp 768w, https:\/\/www.smrekovit.si\/wp-content\/uploads\/2026\/09\/smola-bosvelije-in-smrekova-smola-izboljsana-16x12.webp 16w, https:\/\/www.smrekovit.si\/wp-content\/uploads\/2026\/09\/smola-bosvelije-in-smrekova-smola-izboljsana-600x450.webp 600w, https:\/\/www.smrekovit.si\/wp-content\/uploads\/2026\/09\/smola-bosvelije-in-smrekova-smola-izboljsana.webp 1448w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n\n\n<div class=\"translation-block\">\n  <p class=\"smrekovit-caption\">\n    Comparison of Boswellia resin (left) and spruce resin (right).\n    Colour, translucency and the presence of pieces of bark can vary\n    between individual resin samples.\n  <\/p>\n<\/div>\n\n\n\n\n\n\n\n\n<h2 id=\"ali-smrekova-smola-in-smola-bosvelije-delujeta-drugace\" class=\"wp-block-heading\">Do spruce resin and Boswellia resin act differently?<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    <strong>Yes, their biological profiles differ, but not in the simple\n    sense that one resin acts only at the surface while the other acts only\n    on inflammatory signalling pathways.<\/strong> Research on both resins\n    points to effects at several biological levels, arising from very\n    different chemical starting points.\n  <\/p>\n\n  <h3>Spruce resin links direct microbial effects with tissue responses<\/h3>\n\n  <p>\n    One particularly well-developed area for spruce resin and related\n    conifer-resin materials is the <strong>antimicrobial and biofilm\n    research space<\/strong>. Resin acids and their derivatives can affect\n    microbial membranes and other structures, while appropriate experimental\n    models have also shown effects on biofilm formation and established\n    biofilms.\n  <\/p>\n\n  <p>\n    Spruce resin is not interesting only because of microbes. Compounds from\n    <em>Picea abies<\/em> have also been investigated in relation to\n    <strong>re-epithelialisation and keratinocyte migration<\/strong>, while\n    dehydroabietic acid has been studied in human dermal fibroblasts under\n    inflammatory conditions.\n  <\/p>\n\n  <p>\n    Its biological research profile therefore extends from direct effects on\n    microorganisms to processes involved in tissue response and repair.\n    Findings from an isolated resin acid, however, cannot automatically be\n    attributed to the whole natural resin.\n  <\/p>\n\n  <h3>Boswellia opens a different triterpene and lipid-mediator research space<\/h3>\n\n  <p>\n    Boswellia starts from a different chemical basis. Boswellic and other\n    triterpenic acids have been linked to several targets involved in\n    inflammatory and innate immune responses. Investigated systems include\n    <strong>mPGES-1 and PGE2, certain neutrophil enzymes, NF-\u03baB and\n    cytokine responses<\/strong>.\n  <\/p>\n\n  <p>\n    The classic explanation of Boswellia mainly through\n    <strong>5-LOX<\/strong> is now too narrow. Boswellic acids can inhibit\n    5-LOX in certain laboratory systems, but the effect is highly dependent\n    on experimental conditions. More recent research therefore pays greater\n    attention to the broader metabolism of lipid mediators.\n  <\/p>\n\n  <p>\n    Of particular interest is the\n    <strong>pro-resolving pathway<\/strong>. Some\n    <em>Boswellia serrata<\/em> preparations and individual boswellic acids\n    have been studied for effects on 15-LOX-1 activity and on the formation\n    of lipid mediators associated with the active resolution of inflammatory\n    responses.\n  <\/p>\n\n  <p>\n    Direct evidence for <em>Boswellia dalzielii<\/em> also includes reductions\n    in TNF-\u03b1, IL-6 and NF-\u03baB in LPS-stimulated human immune cells, together\n    with separate laboratory findings involving\n    <em>Pseudomonas aeruginosa<\/em> and biofilms.\n  <\/p>\n\n  <h3>The difference lies in emphasis, not in a strict dividing line<\/h3>\n\n  <p>\n    Spruce resin should therefore not be described as merely \u201clocal\u201d or\n    \u201csurface-acting\u201d, nor Boswellia as merely \u201csignalling\u201d or\n    \u201canti-inflammatory\u201d.\n    <strong>Both interact with several biological processes, and their\n    research profiles partly overlap.<\/strong>\n  <\/p>\n\n  <p>\n    The more interesting distinction is that spruce and related Pinaceae\n    chemistry has a particularly strong\n    <strong>resin-acid, microbial, biofilm and tissue-biology research\n    space<\/strong>, while Boswellia has a particularly rich\n    <strong>triterpene, immune and lipid-mediator research space<\/strong>.\n    This provides a much better rationale for investigating possible\n    complementarity than dividing the two resins into two supposedly\n    separate \u201cmechanisms\u201d.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n\n<h2 id=\"ali-ima-kombinacija-smrekove-smole-in-smole-bosvelije-dokazano-prednost\" class=\"wp-block-heading\">Does the combination of spruce resin and Boswellia resin have a proven advantage?<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    <strong>There is a sound scientific rationale for combining spruce resin\n    and Boswellia resin, but a direct advantage of the combination has not\n    yet been demonstrated.<\/strong> The strongest reason to investigate them\n    together is not their similarity but their difference: spruce resin is\n    rooted primarily in a diterpene resin-acid chemical space, whereas\n    Boswellia introduces a distinct pentacyclic triterpene system.\n  <\/p>\n\n  <h3>There is a good biological rationale for complementarity<\/h3>\n\n  <p>\n    Their best-supported biological profiles also differ. Spruce resin and\n    related Pinaceae chemistry have a particularly well-developed\n    <strong>antimicrobial, biofilm and tissue-biology research space<\/strong>,\n    including re-epithelialisation and fibroblast responses.\n  <\/p>\n\n  <p>\n    Boswellia has a particularly rich\n    <strong>triterpene, immune and lipid-mediator research space<\/strong>,\n    including research on PGE2, certain neutrophil targets, cytokine\n    responses and newer pro-resolving lipid pathways.\n  <\/p>\n\n  <p>\n    This makes spruce resin and Boswellia an interesting combination to\n    investigate: <strong>two chemically distant systems may cover a broader\n    biological space than either one alone.<\/strong> This is a scientifically\n    grounded hypothesis of complementarity, not merely a marketing concept.\n  <\/p>\n\n  <h3>Complementarity is not the same as synergy<\/h3>\n\n  <p>\n    Separate studies of the two resins are not enough to show that their\n    combination performs better than either resin alone. A direct combination\n    experiment may produce an <strong>additive, synergistic, indifferent or\n    antagonistic<\/strong> result.\n  <\/p>\n\n  <p>\n    True synergy means that the combined effect exceeds what would be\n    expected from simple additivity of the individual components. This cannot\n    be demonstrated merely by listing different chemical compounds or\n    biological targets; the combination itself must be tested at multiple\n    concentrations and ratios.\n  <\/p>\n\n  <h3>Formulation also matters<\/h3>\n\n  <p>\n    Resin systems add another important level:\n    <strong>what is present in a formulation is not necessarily equally\n    biologically available<\/strong>. Resin acids and boswellic acids are\n    highly lipophilic compounds, so the vehicle, solubility, viscosity and\n    distribution within the formulation can substantially alter their release.\n  <\/p>\n\n  <p>\n    Research on boswellic acids has shown that different formulations of the\n    same active material can change its passage through skin several-fold.\n    With conifer resins, poor water solubility is also known to strongly\n    influence the apparent result of laboratory assays.\n  <\/p>\n\n  <p>\n    A combination therefore raises two separate questions:\n    <strong>do the two chemical and biological systems complement each other,\n    and are both actually released from the same formulation within a useful\n    concentration range?<\/strong>\n  <\/p>\n\n  <p>\n    The best-supported conclusion at present is therefore that combining\n    spruce resin and Boswellia has a <strong>strong research rationale for\n    complementarity<\/strong>. Whether this translates into an additive\n    advantage, true synergy or merely overlapping effects requires direct\n    comparative testing.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n\n<h2 id=\"kaj-pa-varnost-in-alergije\" class=\"wp-block-heading\">What about safety and allergies?<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    With both resins, possible biological effects should be considered\n    alongside the <strong>potential for irritation and sensitisation<\/strong>.\n    For conifer resins, this issue is particularly well known because of\n    colophony and related resin-acid materials.\n  <\/p>\n\n  <h3>Conifer resins have a recognised allergenic potential<\/h3>\n\n  <p>\n    Colophony is a recognised contact allergen. In the reviewed data,\n    sensitisation to colophony occurs in approximately\n    <strong>1\u20133% of the general population<\/strong>, while rates may be\n    higher in dermatology populations undergoing patch testing.\n  <\/p>\n\n  <p>\n    Allergic contact reactions have also been reported in clinical studies\n    of spruce-resin ointments. One review reported such reactions in about\n    <strong>2% of treated patients<\/strong>, although the total number of\n    participants was relatively small.\n  <\/p>\n\n  <p>\n    The basic resin acids are not the only relevant compounds.\n    <strong>Oxidised derivatives of resin acids<\/strong>, which can form as\n    resin ages and is exposed to air, are also important in the allergenic\n    profile of colophony.\n  <\/p>\n\n  <h3>Allergy to spruce resin does not automatically mean allergy to Boswellia<\/h3>\n\n  <p>\n    Spruce resin and Boswellia resin belong to very different chemical\n    systems. Spruce resin is dominated by a diterpene resin-acid space,\n    whereas Boswellia is characterised by pentacyclic triterpenes and other\n    components of an oleo-gum-resin.\n  <\/p>\n\n  <p>\n    An <strong>allergy to spruce resin or colophony therefore cannot\n    automatically be transferred to Boswellia<\/strong>. At the same time,\n    different chemistry alone does not prove that an individual cannot react\n    to Boswellia.\n  <\/p>\n\n  <p>\n    If someone has previously had a clear allergic contact reaction to a\n    resin, it is therefore more appropriate to regard a new resin as\n    <strong>a different material rather than a guaranteed safe substitute<\/strong>.\n  <\/p>\n\n  <h3>What should you do if a reaction occurs?<\/h3>\n\n  <p>\n    If persistent redness, itching, swelling, blistering or another pronounced\n    skin reaction develops after use, exposure should be stopped. A stronger,\n    recurrent or unclear reaction is appropriately assessed by a dermatologist,\n    with patch testing where indicated.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n\n<h2 id=\"katera-smola-je-torej-boljsa\" class=\"wp-block-heading\">So which resin is \u201cbetter\u201d?<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <p>\n    <strong>In general, it is not possible to say that one of the two resins\n    is simply better.<\/strong> Spruce resin and Boswellia resin are chemically\n    different materials with partly overlapping but differently developed\n    research profiles.\n  <\/p>\n\n  <p>\n    For <a href=\"\/en\/spruce-resin\/\">spruce resin<\/a>, a particularly strong\n    area of research concerns\n    <strong>microorganisms, biofilms and processes involved in tissue response\n    and repair<\/strong>. For <a href=\"\/en\/frankincense\/\">Boswellia resin<\/a>,\n    the <strong>triterpene, immune and lipid-mediator research space<\/strong>\n    is especially well developed.\n  <\/p>\n\n  <p>\n    This does not mean that either resin is limited to those areas. Their\n    biological profiles partly overlap, and in both cases the result also\n    depends on the <strong>specific resin material, extract, concentration\n    and formulation<\/strong>.\n  <\/p>\n\n  <p>\n    A more useful question than \u201cwhich is better?\u201d is therefore:\n    <strong>which resin or preparation has actually been studied for the\n    process of interest, and what level of evidence supports it?<\/strong>\n  <\/p>\n\n  <p>\n    The substantial chemical difference between the two is also what makes\n    their possible complementarity scientifically interesting. It does not,\n    however, mean that a combination is necessarily better than either resin\n    on its own.\n  <\/p>\n\n<\/div>\n\n\n\n\n\n\n\n\n<h2 id=\"pogosta-vprasanja-o-smrekovi-smoli-in-smoli-bosvelije\" class=\"wp-block-heading\">Frequently asked questions about spruce resin and Boswellia resin<\/h2>\n\n\n\n\n\n\n<div class=\"translation-block\">\n\n  <div class=\"smrekovit-faq\">\n\n    <details>\n      <summary>Are spruce resin and Boswellia resin the same type of resin?<\/summary>\n      <p>\n        No. Spruce resin comes from Norway spruce (<em>Picea abies<\/em>) and is\n        chemically strongly associated with diterpene resin acids and their\n        derivatives. Boswellia resin comes from species of the genus\n        <em>Boswellia<\/em> and has a different chemical architecture in which\n        pentacyclic triterpenic acids are particularly important. They are two\n        distinct natural resin systems.\n      <\/p>\n    <\/details>\n\n    <details>\n      <summary>Does spruce resin contain boswellic acids?<\/summary>\n      <p>\n        Boswellic acids are characteristic mainly of resins from the genus\n        <em>Boswellia<\/em> and are not characteristic constituents of the known\n        chemical profile of spruce resin. In <em>Picea abies<\/em>, diterpene\n        resin acids, their oxidised derivatives and, in some types of resin,\n        lignans and hydroxycinnamic compounds are more important.\n      <\/p>\n    <\/details>\n\n    <details>\n      <summary>Does Boswellia resin contain the same resin acids as spruce resin?<\/summary>\n      <p>\n        They do not share the same basic chemical system. Spruce resin is\n        characterised mainly by diterpene resin acids of the abietane and\n        pimarane types, whereas an important part of the non-volatile resin\n        fraction of Boswellia consists of pentacyclic triterpenic acids,\n        including boswellic and related compounds.\n      <\/p>\n    <\/details>\n\n    <details>\n      <summary>Does spruce resin mainly act on microbes while Boswellia acts on inflammation?<\/summary>\n      <p>\n        That division is too simplistic. Spruce resin has research concerning\n        microorganisms and biofilms, but also keratinocytes, fibroblasts,\n        re-epithelialisation and other tissue processes. Boswellia has a strong\n        research base involving inflammatory, immune and lipid-mediator\n        processes, while laboratory findings also exist for microbes and\n        biofilms. The main difference is which areas are currently best studied\n        for each resin.\n      <\/p>\n    <\/details>\n\n    <details>\n      <summary>Is a combination of spruce resin and Boswellia proven to be better?<\/summary>\n      <p>\n        No. Their very different chemistry and partly different biological\n        profiles provide a sound research rationale for possible\n        complementarity. There is currently no direct evidence that the\n        combination is more effective than either resin alone or that true\n        synergy exists between them. This would require direct comparative\n        experiments.\n      <\/p>\n    <\/details>\n\n    <details>\n      <summary>Can Boswellia be used by someone allergic to spruce resin?<\/summary>\n      <p>\n        An allergy to spruce resin or colophony does not automatically imply an\n        allergy to Boswellia because the two materials are chemically quite\n        different. This does not mean that a reaction to Boswellia is impossible.\n        In a person with a known resin allergy, Boswellia should therefore be\n        regarded as a different material rather than a guaranteed safe substitute.\n      <\/p>\n    <\/details>\n\n  <\/div>\n\n<\/div>\n\n\n\n\n\n\n\n\n\n\n\n<div class=\"translation-block article-footer-meta\">\n\n  <div class=\"article-footer-meta__info\">\n\n    <div class=\"article-footer-meta__item\">\n      <span class=\"article-footer-meta__label\">Author<\/span>\n      <span class=\"article-footer-meta__value\">Matic Konc, biomedical laboratory engineer<\/span>\n    <\/div>\n\n    <div class=\"article-footer-meta__item\">\n      <span class=\"article-footer-meta__label\">Last content update<\/span>\n      <time class=\"article-footer-meta__value\" datetime=\"2026-09-28\">28 September 2026<\/time>\n    <\/div>\n\n  <\/div>\n\n  <div class=\"article-footer-meta__sources\">\n\n    <h3>Scientific and professional sources<\/h3>\n\n    <h4>Spruce resin and related conifer resin materials<\/h4>\n\n    <ul>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1515\/HF.2008.070\" target=\"_blank\" rel=\"noopener noreferrer\">Composition of callus resin of Norway spruce, Scots pine, European larch and Douglas fir<\/a><\/strong>\n        <span>Holmbom T., Reunanen M., Fardim P. (2008), <em>Holzforschung<\/em> \u2013 comparison of oleoresin and callus resin, including lignans, hydroxycinnamic compounds and resin acids.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1007\/s10096-011-1502-9\" target=\"_blank\" rel=\"noopener noreferrer\">In vitro fungistatic effects of natural coniferous resin from Norway spruce (Picea abies)<\/a><\/strong>\n        <span>Rautio M. et al. (2011), <em>European Journal of Clinical Microbiology &amp; Infectious Diseases<\/em> \u2013 composition of purified spruce resin material and laboratory findings involving dermatophytes.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1111\/j.1600-0463.2011.02791.x\" target=\"_blank\" rel=\"noopener noreferrer\">Antimicrobial properties of natural coniferous rosin in the European Pharmacopoeia challenge test<\/a><\/strong>\n        <span>Sipponen A., Laitinen K. (2011), <em>APMIS<\/em> \u2013 antimicrobial activity and the importance of concentration, direct contact and poor water solubility.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1111\/jam.13640\" target=\"_blank\" rel=\"noopener noreferrer\">Novel aqueous oil-in-water emulsions containing extracts of natural coniferous resins are strongly antimicrobial against enterobacteria, staphylococci and yeasts, as well as on bacterial biofilms<\/a><\/strong>\n        <span>Haapakorva E., Holmbom T., von Wright A. (2017), <em>Journal of Applied Microbiology<\/em> \u2013 oxidised resin acids, microorganisms, biofilms and formulation-dependent availability of resin constituents.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1055\/a-1141-0921\" target=\"_blank\" rel=\"noopener noreferrer\">Norway Spruce Balm: Phytochemical Composition and Ability to Enhance Re-epithelialization In Vitro<\/a><\/strong>\n        <span>Goels T. et al. (2020), <em>Planta Medica<\/em> \u2013 lignans, hydroxycinnamic compounds, diterpene resin acids and derivatives, and an in vitro keratinocyte re-epithelialisation model.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.3389\/fphar.2022.906411\" target=\"_blank\" rel=\"noopener noreferrer\">Ultra High-Performance Supercritical Fluid Chromatography for the Quantitation of Diterpene Resin Acids in Norway Spruce Samples<\/a><\/strong>\n        <span>Goels T. et al. (2022), <em>Frontiers in Pharmacology<\/em> \u2013 analytical determination of eight diterpene resin acids and variability among Norway spruce samples.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC4314026\/\" target=\"_blank\" rel=\"noopener noreferrer\">Dehydroabietic acid reverses TNF-\u03b1-induced the activation of FOXO1 and suppression of TGF-\u03b21\/Smad signaling in human adult dermal fibroblasts<\/a><\/strong>\n        <span>Wang X.-W., Yu Y., Gu L. (2014), <em>International Journal of Clinical and Experimental Pathology<\/em> \u2013 human dermal fibroblast model involving dehydroabietic acid.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1016\/j.jep.2017.03.055\" target=\"_blank\" rel=\"noopener noreferrer\">Abietic acid isolated from pine resin (Resina Pini) enhances angiogenesis in HUVECs and accelerates cutaneous wound healing in mice<\/a><\/strong>\n        <span>Park J.Y. et al. (2017), <em>Journal of Ethnopharmacology<\/em> \u2013 preclinical evidence involving isolated abietic acid, angiogenesis and wound healing; this study concerns a compound isolated from pine resin rather than whole spruce resin.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1111\/j.1365-2133.2008.08461.x\" target=\"_blank\" rel=\"noopener noreferrer\">Beneficial effect of resin salve in treatment of severe pressure ulcers: a prospective, randomized and controlled multicentre trial<\/a><\/strong>\n        <span>Sipponen A. et al. (2008), <em>British Journal of Dermatology<\/em> \u2013 randomized clinical trial of a Norway spruce resin preparation in severe pressure ulcers.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1111\/j.1365-4632.2011.05397.x\" target=\"_blank\" rel=\"noopener noreferrer\">Natural coniferous resin salve used to treat complicated surgical wounds: pilot clinical trial on healing and costs<\/a><\/strong>\n        <span>Sipponen A. et al. (2012), <em>International Journal of Dermatology<\/em> \u2013 pilot clinical study involving complicated surgical wounds.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/helda.helsinki.fi\/bitstream\/handle\/10138\/39074\/sipponen_dissertation.pdf?sequence=1\" target=\"_blank\" rel=\"noopener noreferrer\">Coniferous Resin Salve, Ancient and Effective Treatment for Chronic Wounds \u2013 Laboratory and Clinical Studies<\/a><\/strong>\n        <span>Sipponen A. (2013), doctoral dissertation, University of Helsinki \u2013 broader review of laboratory and clinical evidence and safety, including contact sensitisation to resin materials.<\/span>\n      <\/li>\n\n    <\/ul>\n\n    <h4>Boswellia resin and boswellic acids<\/h4>\n\n    <ul>\n\n      <li>\n        <strong><a href=\"https:\/\/theses.hal.science\/tel-04503866\" target=\"_blank\" rel=\"noopener noreferrer\">Caract\u00e9risation et valorisation de mati\u00e8res premi\u00e8res aromatiques : application \u00e0 l\u2019encens, la myrrhe et le ciste<\/a><\/strong>\n        <span>Massei K. (2022), doctoral dissertation, Universit\u00e9 C\u00f4te d\u2019Azur \u2013 detailed chemical characterisation of frankincense including <em>Boswellia dalzielii<\/em>, ethanolic extraction and pentacyclic triterpenic acids.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.3390\/molecules24112153\" target=\"_blank\" rel=\"noopener noreferrer\">Comparative Analysis of Pentacyclic Triterpenic Acid Compositions in Oleogum Resins of Different Boswellia Species and Their In Vitro Cytotoxicity against Treatment-Resistant Human Breast Cancer Cells<\/a><\/strong>\n        <span>Schmiech M. et al. (2019), <em>Molecules<\/em> \u2013 comparison of pentacyclic triterpenic acids among different <em>Boswellia<\/em> species and evidence of substantial species-dependent variability.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1016\/j.saa.2024.124384\" target=\"_blank\" rel=\"noopener noreferrer\">Species-Specific Quantification of Bioactive Boswellic Acids in Boswellia Resin Using NIR Spectroscopy, HPLC and Multivariate Data Analysis<\/a><\/strong>\n        <span>Lau\u00df J. et al. (2024), <em>Spectrochimica Acta Part A<\/em> \u2013 comparison of AKBA and KBA among species and individual resin samples.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1136\/bmj.a2813\" target=\"_blank\" rel=\"noopener noreferrer\">Frankincense: systematic review<\/a><\/strong>\n        <span>Ernst E. (2008), <em>BMJ<\/em> \u2013 systematic review of randomized clinical trials of <em>Boswellia serrata<\/em> extracts and an important distinction between clinical evidence for extracts and evidence concerning raw resin or other species.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1016\/j.ejphar.2009.01.044\" target=\"_blank\" rel=\"noopener noreferrer\">On the interference of boswellic acids with 5-lipoxygenase: Mechanistic studies in vitro and pharmacological relevance<\/a><\/strong>\n        <span>Siemoneit U. et al. (2009), <em>European Journal of Pharmacology<\/em> \u2013 5-LOX as a historically important mechanistic model and limitations of extrapolating laboratory inhibition to physiological conditions.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1111\/j.1476-5381.2010.01020.x\" target=\"_blank\" rel=\"noopener noreferrer\">Inhibition of microsomal prostaglandin E2 synthase-1 as a molecular basis for the anti-inflammatory actions of boswellic acids from frankincense<\/a><\/strong>\n        <span>Siemoneit U. et al. (2011), <em>British Journal of Pharmacology<\/em> \u2013 mPGES-1 and PGE2 as one mechanistic axis of boswellic acids.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.4049\/jimmunol.0803574\" target=\"_blank\" rel=\"noopener noreferrer\">Identification of Human Cathepsin G As a Functional Target of Boswellic Acids from the Anti-Inflammatory Remedy Frankincense<\/a><\/strong>\n        <span>Tausch L. et al. (2009), <em>The Journal of Immunology<\/em> \u2013 cathepsin G as a directly investigated target of boswellic acids in neutrophil biology.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.3390\/antibiotics10121444\" target=\"_blank\" rel=\"noopener noreferrer\">Antibacterial, Immunomodulatory, and Lung Protective Effects of Boswellia dalzielii Oleoresin Ethanol Extract in Pulmonary Diseases: In Vitro and In Vivo Studies<\/a><\/strong>\n        <span>Alotaibi B. et al. (2021), <em>Antibiotics<\/em> \u2013 direct data for a <em>Boswellia dalzielii<\/em> ethanol extract involving <em>Pseudomonas aeruginosa<\/em>, biofilms and LPS-stimulated human PBMC responses including TNF-\u03b1, IL-6 and NF-\u03baB.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.1002\/advs.202205604\" target=\"_blank\" rel=\"noopener noreferrer\">Allosteric Activation of 15-Lipoxygenase-1 by Boswellic Acid Induces the Lipid Mediator Class Switch to Promote Resolution of Inflammation<\/a><\/strong>\n        <span>B\u00f6rner F. et al. (2023), <em>Advanced Science<\/em> \u2013 AKBA, 15-LOX-1 and specialised pro-resolving lipid mediator formation.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.3389\/fphar.2023.1332628\" target=\"_blank\" rel=\"noopener noreferrer\">Frankincense preparation promotes formation of inflammation-resolving lipid mediators by manipulating lipoxygenases in human innate immune cells<\/a><\/strong>\n        <span>Nischang V. et al. (2024), <em>Frontiers in Pharmacology<\/em> \u2013 a standardized <em>Boswellia serrata<\/em> preparation in human innate immune cells and lipid-mediator class switching towards pro-resolving mediators.<\/span>\n      <\/li>\n\n      <li>\n        <strong><a href=\"https:\/\/doi.org\/10.3109\/10717544.2014.898347\" target=\"_blank\" rel=\"noopener noreferrer\">Transdermal microemulsions of Boswellia carterii Bird: formulation, characterization and in vivo evaluation of anti-inflammatory activity<\/a><\/strong>\n        <span>Mostafa D.M. et al. (2015), <em>Drug Delivery<\/em> \u2013 direct evidence that formulation can substantially change AKBA release and skin permeation; this study concerns <em>Boswellia carterii<\/em> microemulsions rather than <em>B. dalzielii<\/em>.<\/span>\n      <\/li>\n\n    <\/ul>\n\n    <p class=\"article-footer-meta__note\">\n      These sources support the botanical, chemical, microbiological, cellular,\n      preclinical and clinical sections of the article. Findings from individual\n      compounds, extracts, resin species or formulations cannot automatically be\n      transferred to another resin or to a finished product. Smrekovit\u2019s internal\n      research documentation was used to systematically review and compare the\n      literature; the original publications are listed above as the scientific sources.\n    <\/p>\n\n    <p class=\"article-footer-meta__note\">\n      <strong>Disclosure of interest:<\/strong> the author has a commercial\n      relationship with Smrekovit, which develops and markets resin-based products.\n      Scientific findings, interpretations and research hypotheses are therefore\n      deliberately distinguished throughout the article.\n    <\/p>\n\n  <\/div>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Spruce resin and Boswellia resin are both natural tree resins, but they differ in botanical origin, chemical composition and research background. We compare their main constituents, similarities and differences, and explain why findings about one resin cannot automatically be applied to the other.<\/p>","protected":false},"author":2,"featured_media":12343,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151,152],"tags":[],"class_list":["post-6265","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-smrekova-smola","category-smola-bosvelije"],"_links":{"self":[{"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/posts\/6265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/comments?post=6265"}],"version-history":[{"count":42,"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/posts\/6265\/revisions"}],"predecessor-version":[{"id":12406,"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/posts\/6265\/revisions\/12406"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/media\/12343"}],"wp:attachment":[{"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/media?parent=6265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/categories?post=6265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.smrekovit.si\/en\/wp-json\/wp\/v2\/tags?post=6265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}