How we scored it
Buchu leaf volatile oil: menthone, pulegone, diosphenol and sulfur-containing terpenoids are plant-made; nothing added, so natural mass equals total mass, 1.0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.
Where it comes from
Steam-distilled from the leaves of buchu (Barosma betulina, now Agathosma betulina), a shrub of South Africa's Western Cape. No synthetic route exists for the oil as defined by this INCI name.
In plain English
A volatile oil from the leaves of buchu, a shrub native to South Africa, used as a fragrance ingredient. Its minty, fruity aroma comes from compounds such as menthone, pulegone and diosphenol, which the plant makes itself.
CosIng definition: Barosma Betulina Leaf Oil is the volatile oil expressed from the leaves of Barosma betulina, Rutaceae
References
- 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
- 2BAROSMA BETULINA LEAF OIL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3BAROSMA BETULINA LEAF OIL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BAROSMA%20BETULINA%20LEAF%20OIL