How we scored it
Extract of masterwort leaves: coumarins, flavonoids, essential-oil terpenes and plant matter are all plant-derived (n=1). Solvent leaves no mass. Total 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
Dominant route is solvent extraction of masterwort leaves, a herb of mountain Europe. No alternative route is commercially significant.
In plain English
An extract of the leaves of masterwort, a perennial herb of the Alps and other mountain regions of Europe. It is used as a skin-conditioning ingredient.
CosIng definition: Peucedanum Ostruthium Leaf Extract is the extract of the leaves of Peucedanum ostruthium, Apiaceae
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.
- 2PEUCEDANUM OSTRUTHIUM LEAF EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3PEUCEDANUM OSTRUTHIUM LEAF EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEUCEDANUM%20OSTRUTHIUM%20LEAF%20EXTRACT