How we scored it
Water (n=1) plus the odoriferous volatile compounds of hazelnut leaves, obtained by steam distillation (n=1); nothing petrochemical in the final ingredient. 1.00.
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
Leaves of the hazel (Corylus avellana) are steam-distilled and the aqueous distillate (a hydrosol) is collected. No alternative route is commercially significant; any preservative in the commercial grade is declared separately.
In plain English
A scented water collected when hazelnut leaves are steam-distilled. In products it is used as a fragrance and a tonic (refreshing) ingredient. It is made only of water and the leaves' own volatile aroma compounds.
CosIng definition: Corylus Avellana Leaf Water is an aqueous solution of the odoriferous principles of the leaves of the Hazelnut, Corylus avellana 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.
- 2CORYLUS AVELLANA LEAF WATER. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3CORYLUS AVELLANA LEAF WATER. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CORYLUS%20AVELLANA%20LEAF%20WATER