How we scored it
Water (n=1) plus dissolved steam-distillate volatiles from birch leaf (n=1); no other fragments. 100% / 100% = 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 steam distillation of birch (Betula alba) leaves, collecting the aqueous distillate. No commercially significant alternative route is known.
In plain English
The water-based liquid collected when birch leaves are steam-distilled. It is used in skin-care products as a water ingredient that conditions the skin. It consists only of water and the plant's own volatile compounds from birch (Betula alba) leaves.
CosIng definition: Betula Alba Leaf Water is an aqueous solution of the steam distillate obtained from the leaves of the Birch, Betula alba L., Betulaceae
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.
- 2BETULA ALBA LEAF WATER. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3BETULA ALBA LEAF WATER. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BETULA%20ALBA%20LEAF%20WATER