Potassium Caseinate
AKA “Potassium salt of casein, Casein potassium salt”
Synthetic
Ingredient Facts
Potassium caseinate
AKA: Potassium salt of casein, Casein potassium salt
Synthetic · Hair Conditioning · EWG: 4
Plant-Derived Synthetic
Skin Conditioner
Hair Care
Synthetic
Clean
A naturally-derived protein that helps hair and skin retain moisture, leaving both feeling softer and smoother.
CAS #
68131-54-4
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
Casein (milk protein) has been used in cosmetics since ancient times. The potassium salt form was developed in the early 20th century to improve solubility and create protein-enriched cosmetic products.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: CosIng · EWG · CIR