Hydrolyzed Milk Protein

AKA: Milk Protein Hydrolysate, Hydrolyzed Whey Protein

Synthetic

Skin Conditioner

Hair Care

Clean

Protein hydrolyzates, milk. Substance obtained by acidic, alkaline, or enzymatic hydrolysis of milk composed primarily of amino acids, peptides, and proteins. It may contain impurities consisting chiefly of carbohydrates and lipids along with smaller quantities of miscellaneous organic substances of biological origin.

CAS #

92797-39-2

Form

Powder

State

Solid

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

Milk has been used in skincare since antiquity, particularly in European traditions with milk baths for skin softening. The hydrolyzed form was developed in the 20th century to create smaller peptides for improved absorption and conditioning properties.

EWG

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

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

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