Sodium Hydrolyzed Casein
AKA “Casein Protein, Hydrolyzed Milk Protein”
Skin Conditioning
Ingredient Facts
Sodium hydrolyzed casein
AKA: Casein Protein, Hydrolyzed Milk Protein
Skin Conditioning · Hair Conditioning · EWG: 4
Synthetic
Skin Conditioner
Hair Care
Not Clean
Casein hydrolysates, sodium salts
CAS #
222400-26-2
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 skincare preparations for centuries; the sodium salt form was developed in the 20th century. Used as a film-forming and skin conditioning agent that provides mild protein-derived benefits.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Verified Jun 2026
Data: CosIng · EWG · CIR