Conditioning Agent
HYDROLYZED SERICIN
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A silk protein from silkworm cocoons — it's a moisture magnet that forms a protective film on skin, boosting hydration, elasticity, and even offering some UV protection. Very well-tolerated.
Hydrolyzed sericin (CAS 73049-73-7) is a protein hydrolysate derived from the sericin fraction of Bombyx mori silk fibers. It functions as a humectant and film-forming agent, binding water molecules and reducing transepidermal water loss. CIR Panel concluded silk proteins safe for cosmetic use. Research shows it's nonmutagenic, nongenotoxic, and has antioxidant, anti-inflammatory, and UV-protective properties. It may stimulate collagen production and cellular regeneration. Rare allergic reactions possible in silk-sensitive individuals.
Function
Skin benefits
- Deep hydration and moisture retention
- Improves skin elasticity and firmness
- Anti-aging — stimulates collagen production
- Antioxidant and UV protection
- Anti-inflammatory — soothes irritated skin
- Forms protective barrier on skin
Known concerns
- Rare allergic reactions possible in silk-sensitive individuals
- One report of depigmentation at 8% concentration in renal patients
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related conditioning agents
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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.