Database/Skin Conditioning/Ergosterol
100% natural origin · ISO 16128

Is Ergosterol natural?

Yes. Ergosterol is the principal sterol of yeast and fungal cell membranes, obtained by extraction or fermentation of biomass.

INCI nameErgosterol
CAS57-87-4
FormulaC28H44O · 396.6 Da
FunctionSkin Conditioning
FeedstockCommercially obtained by extraction from yeast biomass or…

How we scored it

Natural sterol from yeast/fungal biomass; fermentation/extraction product = 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

Commercially obtained by extraction from yeast biomass or ergot-type fungi, often as a by-product of fermentation processing. No petrochemical route exists.

In plain English

A natural sterol obtained from yeast or fungal sources. Used in skincare to help condition the skin.

Structure

2D structure of Ergosterol

(3S,9S,10R,13R,14R,17R)-17-[(E,2R,5R)-5,6-dimethylhept-3-en-2-yl]-10,13-dimethyl-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-ol

PubChem CID 444679 ↗

References

  1. 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.
  2. 2Ergosterol. PubChem CID 444679. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ERGOSTEROL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ERGOSTEROL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ERGOSTEROL