Hydrolyzed Silk

Hydrolyzed Silk molecular structure
molecular structure · PubChem
AKA: Silk Hydrolysate, Hydrolyzed Silk Protein
Synthetic
Humectant
Skin Conditioner
Hair Care
Clean
Protein hydrolyzates, silk
CAS #
96690-41-4
Form
Liquid
Functions
Antistatic
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks In Moisture
Traditional Use
Silk has been prized in Asian beauty for over 4,000 years, used directly on skin for smoothing and conditioning. Hydrolyzed silk was developed in modern cosmetics to create smaller protein molecules that can penetrate skin more effectively.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not Phototoxic
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR