Silk Amino Acids
AKA: Hydrolyzed Silk, Silk Proteins
Synthetic
Humectant
Skin Conditioner
Hair Care
Amino Acid
Acid
Clean
Protein hydrolyzates, silk
CAS #
96690-41-4
Functions
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
Modern extract of silk proteins developed in the 20th century to capture the skin-conditioning properties traditionally attributed to whole silk in Chinese and Japanese beauty practices.
Skin Types
●all-skin-types
Best For
Dehydration
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
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Verified Jun 2026
Data: CosIng · EWG · CIR