Hydrolyzed Casein

Hydrolyzed Casein 1
AKA: Milk Protein Hydrolysate, Casein Hydrolysate
Synthetic
Skin Conditioner
Hair Care
Clean
Caseins, hydrolyzates. The constituent amino acids produced by the hydrolysis of caseins
CAS #
65072-00-6
Form
Powder
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.
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
Casein (milk protein) has been used in traditional beauty preparations for centuries across Mediterranean and European cultures as a skin-softening ingredient. Hydrolyzed casein was developed in modern cosmetics to provide concentrated amino acids and improve protein-based conditioning benefits.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
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-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR