How we scored it
Extract of butterbur leaves: sesquiterpenes, flavonoids, tannins and plant matter are all plant-derived (n=1). Extraction 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 butterbur leaves, a plant of damp ground in Europe and Asia. No alternative route is commercially significant.
In plain English
An extract of the leaves of butterbur, a large-leaved plant that grows in damp ground across Europe. It is used as a skin-conditioning ingredient.
CosIng definition: Petasites Hybridus Leaf Extract is the extract of the leaves of Petasites Hybridus (L.), Asteraceae
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.
- 2PETASITES HYBRIDUS LEAF EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3PETASITES HYBRIDUS LEAF EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PETASITES%20HYBRIDUS%20LEAF%20EXTRACT