gamma-Patchoulene is a patchouli-family sesquiterpene hydrocarbon that also appears in spikenard and some Litsea oils. The current evidence base is much stronger for identity and occurrence than for isolated pharmacology or safety. Publicly accessible studies mainly document it as a notable component within complex oils, sometimes in oils that show antimicrobial or related bioactivity at the mixture level. For AromaForge, gamma-patchoulene should be treated as a compositional marker with honest evidence gaps around direct human relevance and isolated-compound activity.
Chemical identity and composition
PubChem identifies gamma-patchoulene as C15H24. In the local archive it is documented at 4.65% in spikenard, which supports its role as a non-trace sesquiterpene hydrocarbon in root-oil chemistry rather than a negligible background constituent.
Aroma and practical use
- Use the recorded woody, earthy, patchouli-like descriptors to explore a blend's scent character; perceived strength also depends on the other ingredients.
- Read the route, preparation and experimental context before using a study finding to choose an oil.
Reported benefits and effects
Findings retain their study context. An animal or laboratory result describes that experiment.
spikenard occurrence
A directly readable spikenard COA used in the archive lists gamma-patchoulene at 4.65% in the analyzed oil.
Measured: major constituent occurrence
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
litsea linii leaf oil occurrence
A 2010 composition study reported gamma-patchoulene at 11.0% in Litsea linii leaf oil, identifying it as one of the dominant sesquiterpenes in that profile.
Measured: major constituent occurrence
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
litsea linii mixture antimicrobial context
The same Litsea study reported antimicrobial and anti-wood-decay fungal activity for the oils, but it did not establish gamma-patchoulene as the isolated active constituent.
Measured: whole-oil antimicrobial activity
This experimental finding does not establish benefit, dose or safety in people using this blend.
Use concerns and concentration limits
Sensitization concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Phototoxicity concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Oxidation concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Penetration enhancementNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
No numeric constituent-specific use limit is available here. Missing is not an unrestricted-use clearance.
No authoritative standalone toxicology monograph, IFRA restriction, or human tolerability study for isolated gamma-patchoulene was verified in the reviewed public sources.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
No direct public citation is attached to this entry.
Because the accessible activity evidence is mixture-level, copy should avoid implying direct antimicrobial or therapeutic effects for isolated gamma-patchoulene.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
No direct public citation is attached to this entry.
Constituents it may interact with
No constituent-pair interaction is recorded for this identity. The report does not assume either amplification or incompatibility.
How the effects were investigated
no constituent specific mechanism verified
No robust constituent-specific molecular mechanism for isolated gamma-patchoulene was verified in this research pass; the accessible literature is dominated by occurrence reporting and whole-oil testing.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
No direct public citation is attached to this entry.
What this report cannot establish
- A reported constituent percentage does not establish an effective human therapeutic dose or the amount absorbed into the body.
- The presence of a constituent does not guarantee a clinical benefit, rash treatment or sleep improvement from a custom blend.
- An unflagged concern or missing use limit does not establish safety for ingestion, inhalation, skin exposure or a particular person.
- A candidate constituent interaction does not establish that two oils amplify one another at the selected proportions.
- Constituent descriptors alone do not establish a precise top, heart or base lifetime in a finished blend.
Known data gaps (7)
- No human clinical studies for isolated gamma-patchoulene were located in this pass.
- No robust constituent-specific mechanism was verified from the reviewed public literature.
- Public dermal, inhalation, and long-term safety data for isolated gamma-patchoulene remain sparse.
- 2026-07-13 verification pass: web search for IFRA/RIFM dermal limit and sensitization data found no authoritative constituent-specific results; prior dermal_limit_pct (25) and sensitizing (true) were unsourced placeholders and have been corrected to null.
- 2026-07-13 second-pass retry: direct CAS-number search (508-55-4) against IFRA Standards Library, RIFM/Elsevier fragrancematerialsafetyresource, and ECHA C&L inventory returned no gamma-patchoulene-specific dermal limit, sensitization, or phototoxicity record; TGSC safety-in-use listing (already cited) remains the only accessible safety source and states toxicology 'not determined' with no fragrance-use recommendation. Fields remain null/false/unverified.
- No constituent-specific numeric dermal reference is available here.
- Some findings do not record an explicit exposure route; consult the linked study before applying them to a use.