Silk Amino Acids
AKA “Hydrolyzed Silk, Silk Proteins”
Acid
Ingredient Facts
Silk amino acids
AKA: Hydrolyzed Silk, Silk Proteins
Acid · Humectant · EWG: 1
Synthetic
Humectant
Skin Conditioner
Hair Care
Amino Acid
Acid
Clean
Protein hydrolyzates, silk
CAS #
96690-41-4
See origin →
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
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Bloom Effects
Capryloyl Silk Amino Acids
European Commission
EU Cosmetic Ingredient Database (CosIng)
Hydrolyzed Silk
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lauroyl Silk Amino Acids
European Commission
EU Cosmetic Ingredient Database (CosIng)
MEA-Hydrolyzed Silk
European Commission
EU Cosmetic Ingredient Database (CosIng)
Palmitoyl Silk Amino Acids
European Commission
EU Cosmetic Ingredient Database (CosIng)
Potassium Lauroyl Silk Amino Acids
European Commission
EU Cosmetic Ingredient Database (CosIng)
Silk Amino Acids
European Commission
EU Cosmetic Ingredient Database (CosIng)
Sodium Lauroyl Silk Amino Acids
European Commission
EU Cosmetic Ingredient Database (CosIng)
Hydrolyzed Silk
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Lauroyl Silk Amino Acids
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Potassium Lauroyl Silk Amino Acids
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Silk Amino Acids
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Sodium Lauroyl Silk Amino Acids
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
[Heterologous expression of bacterial tyrosinase and its applications in biological hair dyeing and DOPA modification of hydrolyzed silk fibroin].
Zheng Y, Xu R, Wang Y, Fang C, DU G et al.
Sheng wu gong cheng xue bao = Chinese journal of biotechnology, 2024
Verified Jun 2026
Data: CosIng · EWG · CIR