Hydrolyzed Silk
A hydrolyzed silk protein. It draws water and gives skin smoothness and a silky feel. Well tolerated.
Evidence by route
Topical application
A functional protein. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Hydrolyzed silk (INCI Hydrolyzed Silk) is a silk protein broken into small peptides to make it water-soluble. In a formula it acts as a surface humectant: it draws water and leaves skin and hair soft, with a silky feel. This is a conditioning and surface-hydration component, not a corrective active. It improves feel and immediate smoothness but does not plump, firm or repair the barrier in depth. Its effect is textural, real but modest. Applied topically it is not systemically relevant, so it can be used during pregnancy and breastfeeding without issue. Tolerability is good. Irritation and allergy potential are both low, suitable for sensitive skin. There is no data on relevant comedogenicity.
Frequently asked questions
Is Hydrolyzed Silk safe during pregnancy?
Hydrolyzed Silk is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Hydrolyzed Silk for?
Hydrolyzed Silk suits: normal, dry, combination, oily, sensitive.
What is Hydrolyzed Silk and what does it do in cosmetics?
A hydrolyzed silk protein.
What's the INCI name for Hydrolyzed Silk?
The INCI name is Hydrolyzed Silk.
See Hydrolyzed Silk in a product composition right on the store page
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