Hydrolyzed Hair Keratin
AKA “Keratin Hydrolysate, Soluble Keratin, Hair Protein Hydrolysate
Skin Conditioning
Ingredient Facts
Hydrolyzed hair keratin
AKA: Keratin Hydrolysate, Soluble Keratin, Hair Protein Hydrolysate
Skin Conditioning · Hair Conditioning · EWG: 3
Synthetic
Skin Conditioner
Hair Care
Not Clean
Keratins, hydrolyzates. A biological material consisting predominantly of partially hydrolyzed keratin
CAS #
65997-21-9, 69430-36-0
Form
Powder
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.
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
Keratin, the primary structural protein in hair, began being extracted and used in cosmetics in the mid-20th century to repair damaged hair. Hydrolyzed hair keratin was developed to create smaller peptide chains that can penetrate the hair shaft and restore strength and shine.
Skin Types
all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Irritant
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUpermitted
JAPANpermitted
CANADApermitted
Verified Jun 2026
Data: CosIng · EWG · CIR