Skin Conditioning
HYDROLYZED MILT
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Hydrolyzate of fish milt (sperm sacs) — rich in DNA and basic protamine peptides. Niche conditioning ingredient with modest safety data.
Hydrolyzed milt is the enzymatic hydrolysate of fish milt, typically salmon or herring, which contains DNA, RNA and arginine-rich protamine proteins. In cosmetics it is used as a "nucleic-acid" skin conditioner. Protamines in medical use (e.g., protamine sulfate) are documented to cause allergic reactions including anaphylaxis in sensitized individuals, though cosmetic applications are topical and local. Fish allergen considerations apply. No EU restriction, no CIR monograph; compositional consistency between suppliers is poor.
Function
Skin benefits
- Rich in DNA, protamines and nucleotides
- Marketed for skin-reparative effects
- Traditional use in Asian skincare
Known concerns
- Fish-sperm derived — not vegan, fish-allergen flag
- Protamines historically associated with immunogenicity (medical contexts)
- Inconsistent compositional standards across suppliers
- Limited modern safety data
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 — always read the physical product label and consult a healthcare professional for personal concerns.