Hydrolyzed Yeast Extract
A yeast hydrolyzate with amino acids and peptides. It supports hydration and skin comfort. Well tolerated.
Evidence by route
Topical application
A hydrating biocomponent. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Hydrolyzed Yeast Extract is made by breaking yeast proteins down into amino acids and small peptides. In a formula it works as a humectant and mild conditioner: the amino acids draw water and improve the comfort feel of the skin. As an active it is a supporting component. It gives light hydration and can add a firmer feel, but peptides from hydrolysis are non-specific, not comparable to a defined signaling peptide. Some revitalizing claims go beyond what the data support, so it is fairer to present it as an auxiliary humectant. Topically the systemic contribution is negligible, so it can be used during pregnancy and breastfeeding. Tolerance is good: low irritation and allergy, suitable for sensitive skin. It has no meaningful comedogenic profile, so it fits any skin type.
Frequently asked questions
Is Hydrolyzed Yeast Extract safe during pregnancy?
Hydrolyzed Yeast Extract is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Hydrolyzed Yeast Extract for?
Hydrolyzed Yeast Extract suits: normal, dry, combination, oily, sensitive.
What is Hydrolyzed Yeast Extract and what does it do in cosmetics?
A yeast hydrolyzate with amino acids and peptides.
What's the INCI name for Hydrolyzed Yeast Extract?
The INCI name is Hydrolyzed Yeast Extract.
See Hydrolyzed Yeast Extract in a product composition right on the store page
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Ingredients in the same category
Hydrolyzed Yeast Protein, Hydroxyethyl Urea, Hydroxyethylurea, Hydroxypalmitoyl Sphinganine, PEG-32, Sunflower Seed Oil Glyceride, C13-14 Isoalkane, Galactomyces Ferment Filtrate
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