Material guide: myrrh — the resin trilogy's close, a bittersweet balsam

The resin trilogy's last stop: labdanum handles the sweet and thick, frankincense the bright, and myrrh handles the bitter. It is the oleo-gum resin that seeps from Commiphora trunks — a botanical family neighbor of frankincense, and its constant companion through history. Etymology lore traces the word myrrh to a Semitic root meaning "bitter": the name wears the taste on its face.

What matters

• Myrrh oil is a bittersweet balsamic base: dry, spicy, amber, toffee, with mushroom and metallic playing rare supporting roles in the database's odor terms. 64 suppliers, 400 hours of longevity (measured neat, the conventional value).
• It has a name in the pharmacology literature: a 1996 Nature letter titled "Analgesic effects of myrrh" (no abstract to quote — title-fact only), and a 2000 follow-up by the same team with quotable detail: myrrh sesquiterpenes showed local anaesthetic activity in vitro, blocking sodium currents.
• Opoponax ("sweet myrrh") is a sister species in the same genus with its own catalog family; mixing the two up is a common mistake.

The basics

CAS	8016-37-3
Source	Essential oil distilled from Commiphora myrrha oleo-gum resin, natural
Odor	balsamic, dry, spicy, amber, toffee, metallic, resinous, mushroom
Odor type	balsamic
Strength	medium
Longevity	400 hours (measured neat at 100%, on a blotter)
Appearance	yellow-amber to greenish-brown clear oily liquid
Flash point	> 93.33 °C
Shelf life	24 months or longer (cool, dark, sealed)
Listings	GRAS, JECFA, CoE, FEMA GRAS, IFRA

Here, 400 hours is the conventional top value of the source's longevity scale (the vanillin guide covered this). The "mushroom" and "metallic" odor terms are not typos: to our noses there really is a damp earthiness and a cool metallic edge, and that is exactly where myrrh pulls away from the other resins.

A perfumery material, a pharmacology regular

Myrrh appears in both perfumery and pharmacology papers. Researchers have measured larvicidal, antibacterial, antifungal and sodium-current-blocking effects in particular oils or fractions under laboratory conditions. Those results describe specific extracts, concentrations and models; they do not mean smelling or ordinarily using myrrh produces the same effects.

For why “this material appears in pharmacology research” cannot be rewritten as a product benefit, see What did that fragrance study actually prove?.

The family on the catalog

Entry	What it is
myrrh oil (64 suppliers)	The material itself: oleo-gum resin distilled oil
myrrh resinoid (33 suppliers)	The solvent-extracted resinoid, 232 hours (non-conventional value)
opoponax oil (25 suppliers)	Sweet myrrh oil: the sister species C. erythraea, trade lore calls it sweet myrrh
myrrh absolute (19 suppliers)	The absolute version, low strength
opoponax absolute (15 suppliers)	Sweet myrrh absolute
myrrh gum (10 suppliers)	The raw resin lumps

Myrrh and opoponax are two materials from sister species in one genus: myrrh bitter and medicinal, opoponax sweeter, toward honey and balsam. The names differ by a word, the smells by a city block — read the botanical name before ordering — one more round of the names-versus-things lesson for naturals.

When you smell it

• To our noses, the oil opens on dry balsam and spice, lifts a toffee sweetness and a touch of mushroom earthiness in the middle, and leaves a cool metallic edge with a shadow of the medicine cabinet. Of the trilogy it is the most introverted, and the one that rewards the longest smelling.
• The trilogy's closing ritual: line up labdanum, frankincense and myrrh on three blotters — sweet, bright, bitter, the three faces of resin in one look.
• Evaluate at 10% or below; the neat oil is viscous and will tint (practical knowledge).

Regulatory

Listed in GRAS, JECFA, CoE, FEMA GRAS, and IFRA. These listings do not provide use limits. Natural resin oil composition drifts with origin and batch, so check current IFRA Standards and the supplier's specification for skin-bound formulas. The analgesic and anaesthetic findings in the pharmacology literature are research results; oral or medicinal use is outside this site's scope.

Buying notes

1. Decide bitter or sweet first: myrrh (C. myrrha) is bitter and medicinal, opoponax (the C. erythraea direction) sweet and balsamic.
2. Oil versus resinoid follows the same logic as frankincense: oil for formula work, resinoid for thickness and fixation.
3. Completing the trilogy in one order is efficient: a small bottle each of labdanum, frankincense and myrrh, and your resin coordinate system is built.

→ Myrrh oil in the database: full physical data, supplier list, suggested pairings. → Opoponax oil | Frankincense | Search by scent: try "balsamic bitter resinous" to find its neighbors.

References

E. Spinozzi, M. Ferrati, C. Baldassarri, P. Rossi, G. Favia, G. Cameli, G. Benelli, A. Canale, L. De Fazi, R. Pavela, L. Quassinti, C. Giordani, F. Araniti, L. Cappellacci, R. Petrelli & F. Maggi, Essential oil and furanosesquiterpenes from myrrh oleo-gum resin: a breakthrough in mosquito vector management, Natural Products and Bioprospecting, 15(1), 12 (2025). PMID 39832119

P. Dolara, B. Corte, C. Ghelardini, A. M. Pugliese, E. Cerbai, S. Menichetti & A. Lo Nostro, Local anaesthetic, antibacterial and antifungal properties of sesquiterpenes from myrrh, Planta Medica, 66(4), 356–358 (2000). PMID 10865454

P. Dolara, C. Luceri, C. Ghelardini, C. Monserrat, S. Aiolli, F. Luceri, M. Lodovici, S. Menichetti & M. N. Romanelli, Analgesic effects of myrrh, Nature, 379(6560), 29 (1996). PMID 8538737