How we scored it
Aqueous steam distillate: water (1.0) plus trace flower volatiles (plant terpenoids, 1.0); no synthetic fragment, so 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
Horse chestnut (Aesculus hippocastanum) flowers are steam-distilled and the condensate is collected as the flower water. No alternative route is commercially significant.
In plain English
A scented water made by steaming horse chestnut flowers and collecting the condensed vapour. It is mostly water with traces of plant aroma compounds, and is used as a water-based skin-conditioning ingredient in products such as toners and lotions.
CosIng definition: Aesculus Hippocastanum Flower Water is an aqueous solution of the steam distillate obtained fron the flowers of Horse Chestnut, Aesculus hippocastanum L., Hippocastanaceae
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.
- 2AESCULUS HIPPOCASTANUM FLOWER WATER. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3AESCULUS HIPPOCASTANUM FLOWER WATER. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=AESCULUS%20HIPPOCASTANUM%20FLOWER%20WATER