Melaleuca alternifolia
Tea tree
- Terpinen-4-ol type (ISO 4730)
Tea tree is one of the very few essential oils whose composition is fixed by an international standard: ISO 4730 requires at least 35%…
By botanical part
leaf
7 published monographs fall under this facet. A facet here is not a taxonomy label but a safety clue: plants in the same family often share cross-reactivity risk, and the same botanical part often shares extraction and oxidation behaviour.
Monographs in this facet
Mentha x piperita
Peppermint
- Menthol / menthone
Peppermint is 42% menthol, and menthol is a drug in its own right — it activates the TRPM8 cold receptor directly. That is why it feels like it is…
Salvia rosmarinus (formerly Rosmarinus officinalis)
Rosemary (cineole chemotype)
- 1,8-Cineole type (CT cineole); CT camphor and CT verbenone differ
Rosemary is the clearest example on this site of why chemotype is not a marketing word: CT cineole is 45% 1,8-cineole and 10% camphor, CT camphor…
Pelargonium graveolens
Geranium (bourbon type)
- Citronellol / geraniol type
Geranium is the affordable stand-in for rose, and it carries the same allergen exposure. Citronellol and geraniol together are 46% of this oil, and…
Eucalyptus radiata
Eucalyptus radiata
- 1,8-Cineole type, low camphor
Of the eucalypts sold for the same purpose, Eucalyptus radiata is the one with the highest cineole and the lowest camphor — roughly 62% and 0.5% by…
Mentha spicata
Spearmint
- Carvone-dominant
Spearmint is peppermint without the menthol: 62% carvone, roughly 0.5% menthol. That one difference is why it does not trigger the TRPM8 cold…
Pogostemon cablin
Patchouli
- Patchoulol / alpha-bulnesene sesquiterpene type
Patchouli is dried, fermented and then distilled, and that process — not any single molecule — is what produces the smell people either love or…