Oxidized Keratin

AKA: Oxidized protein

Synthetic

Skin Conditioner

Hair Care

Clean

Keratin, oxidized with hydrogen peroxide

Form

Powder

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

Keratin is a structural protein found in hair and skin. Oxidized keratin was developed as a modern ingredient to provide conditioning and film-forming properties in hair and skincare products.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not an Irritant

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

Rough Texture

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