Casein
AKA: Casein Extract
Synthetic
Skin Conditioner
Hair Care
Not Clean
Caseins. A complex combination produced in mammary tissue from amino acids supplied by the blood. It contains several proteins, phosphorus, and calcium
CAS #
9000-71-9
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
Derived from milk, casein has been used in traditional skincare for centuries, particularly in European folk practices. Applied topically in poultices and creams for its protein content and skin-softening properties, especially in facial treatments.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR