Humectant
HYDROXYPROLINE
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A non-essential amino acid that is a key building block of collagen. Used as a humectant and conditioning agent; very benign biochemistry, well tolerated.
Function
Skin benefits
- Collagen-precursor amino acid
- Skin conditioning and humectant
- Supports barrier integrity
Known concerns
- No significant concerns at cosmetic concentrations
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related humectants
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.