The ingredient, explained

Yeast Extract

A primary study examines this ingredient in the specified preparation and setting.

Ingredient guide

What it is and what it does

232-387-9 I

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

A verified formulation role is not on file for this name.

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Human research on a combination

Investigator-blinded comparison found similar pigmentation improvements for a four-active cosmetic and hydroquinone/tretinoin, with fewer tolerability issues.

What this does not tell us

Yeast species and extraction preparation not specified. Multi-ingredient formulation; no isolated yeast-extract effect. Active comparator, not vehicle.

Sources for this summary. PubMed 24305422 ↗

Research review checked Oct 1, 2026

Bounded review of local candidates, exact-name indexed primary journal/PubMed safety and topical searches; not a systematic review.

Ingredient research is not proof that a product containing this ingredient works.