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Silk protein hydrolysate

HYDROLYZED SERICIN

CAS 73049-73-7
85

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

Hydrolyzed sericin is a silkworm-derived protein that conditions skin and hair. The CIR has reviewed silk proteins as safe and non-irritating, with rich amino acid content supporting hydration and smoothness.

Function

HAIR CONDITIONING, SKIN CONDITIONING

Skin benefits

  • Silk-derived protein hydrolysate that boosts skin and hair hydration through amino acid content
  • Forms a breathable film that improves moisture retention and reduces transepidermal water loss
  • CIR Expert Panel safety assessment classifies hydrolyzed silk proteins as non-irritating and non-sensitizing
  • Provides smoothing, anti-frizz and shine benefits in hair care formulations

Known concerns

  • Derived from silkworm cocoons, so not suitable for strict vegan formulations
  • Quality and amino acid composition vary across suppliers, affecting performance

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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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.