Potassium Undecylenoyl Alginate

AKA “Alginate Surfactant”

Skin Conditioning

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Ingredient Facts

Potassium undecylenoyl alginate

AKA: Alginate Surfactant

Skin Conditioning · Emulsion Stabilising · EWG: 4

Synthetic

Emulsifier

Skin Conditioner

Hair Care

Marine

Not Clean

Alginic acid, reaction products with 10-undecenoyl chloride, potassium salts

CAS #

224580-88-5

Form

Powder

See origin →

Functions

Emulsion Stabilising

Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.

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

A modern synthetic derivative combining undecylenic acid (from castor oil) with sodium alginate (from seaweed) developed in the late 20th century. It was engineered to combine the antimicrobial benefits of undecylenic acid with the film-forming and thickening properties of alginate.