Sa
Saccharomyces Cerevisiae Extract
Saccharomyces Cerevisiae Extract
A yeast extract used to condition skin.
What it does
It’s made from Saccharomyces cerevisiae, the yeast used for baking bread and brewing beer. It’s there for the formula, not as a tested skin treatment.
The evidence, graded
expert consensusUS safety reviewers (2024) assessed 56 yeast ingredients, mostly used to protect or condition skin. They judged 21 safe as used by name, baker’s yeast (Saccharomyces cerevisiae) extract among them. They also cleared 22 general yeast names, if made from yeasts with enough safety data, and had too little data on 13. Breathing in live yeast has caused allergy, but yeasts in cosmetics are broken open and inactivated.Cherian 2024 · Cosmetic Ingredient Review ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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