Skin Conditioning
WHEY FERMENT
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A fermented whey ingredient — brings peptides, amino acids, and mild lactic acid to skincare. Generally gentle; dairy-allergy caveat.
Whey Ferment is the fermentation product of whey, the liquid fraction remaining after cheese production. Fermentation (often by lactic-acid bacteria like Lactobacillus) converts lactose into lactic acid and generates bioavailable peptides and amino acids. In cosmetics it functions as a humectant, mild exfoliant (via lactic acid), and skin conditioning agent. Food-grade parent material gives strong baseline safety; the ingredient is well-tolerated at typical cosmetic concentrations (1-10%). Dairy allergens can persist depending on processing; declaration may be required in allergen-aware regulatory frameworks. No dedicated CIR review under this exact INCI.
Skin benefits
- Dairy-ferment lysate rich in peptides, lactic acid, amino acids
- Mild AHA-like exfoliation at higher %
- Skin conditioning and humectant
- Traditional ferment with food-history safety
Known concerns
- Cow milk allergen potential
- Variable composition by producer
- Lactic acid content can lower product pH
- Limited dedicated CIR review
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related skin conditionings
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.