Casein Extract

Casein Extract 1
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Casein Extract 6
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Casein Extract 8
Casein Extract 9
Casein Extract 10
Plant-Derived
Skin Conditioner
Hair Care
Extract
Not Clean
Casein Extract is an extract of caseins, a complex combination produced in mammary tissue from amino acids supplied by the blood
CAS #
9000-71-9
Form
Liquid
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
A processed form of milk protein used in early 20th-century cosmetic formulations based on traditional milk-based skincare practices. Created to isolate and concentrate casein's beneficial proteins for modern cosmetic applications.
EWG
4
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-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR