Why the score varies
This ingredient is made commercially by more than one route, and ISO 16128 scores the feedstock actually used. Without a supplier certificate of origin the value cannot be claimed.
| Route | Feedstock | NOI | Share | Notes |
|---|---|---|---|---|
| Plant extraction / esculin hydrolysis | Aesculus/Fraxinus bark glycoside (esculin) | 1.00 | minor | |
| Pechmann condensation synthesis | resorcinol (petrochemical phenol) | 0.00 | likely dominant, unconfirmed |
How we scored it
Where it comes from
Esculetin occurs naturally in horse-chestnut and ash bark, obtainable by extraction or esculin hydrolysis, but is also manufactured by Pechmann condensation from resorcinol, a petrochemical phenol derivative. Market share between the two routes could not be confirmed.
In plain English
A plant compound found in horse-chestnut and ash bark, used to help condition skin. It can be extracted from plants or made synthetically from petroleum-derived chemicals; both methods are used commercially.
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Structure
6,7-dihydroxychromen-2-one
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.
- 2Esculetin. PubChem CID 5281416. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3ESCULETIN. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4ESCULETIN. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ESCULETIN