Sulfonated Keratin

Sulfonated Keratin

AKA “Hydrolyzed Keratin Sulfonate”

Hair Conditioning

Ingredient Facts

Sulfonated keratin

AKA: Hydrolyzed Keratin Sulfonate

Hair Conditioning · Film Forming · EWG: 4

Synthetic

Occlusive

Skin Conditioner

Barrier Support

Hair Care

Not Clean

Sulfonated Keratin is the product obtained by the oxidative sulfitolysis of wool

CAS #

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Form

Powder

See origin →

Functions

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

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 Protecting

Helps rebuild and strengthen your skin barrier — the invisible shield that keeps moisture in and irritants out. Essential after over-exfoliating or harsh weather.

Nourishes & Protects

Traditional Use

Keratin was first isolated and identified in the early 20th century; its sulfonation was developed later to create a water-soluble form for cosmetics. Used in haircare and skincare to strengthen and condition, mimicking the natural protein structure of hair and skin.