Soyamidopropyl Betaine
AKA “Soy Betaine, Soybean Amidopropyl Betaine”
Synthetic
Ingredient Facts
Soyamidopropyl betaine
AKA: Soy Betaine, Soybean Amidopropyl Betaine
Synthetic · Cleansing · EWG: 4
Plant-Derived Synthetic
Cleanser
Skin Conditioner
Hair Care
Amino Acid
Synthetic
Clean
1-Propanaminium, 3-amino-N-carboxymethyl-N,N-dimethyl-, N-soybean-acyl derivs., hydroxides, inner salts Science: Functions: Cleansing, Hair Conditioning, Skin Conditioning, Surfactant - Cleansing ⚠ Allergen Alert (Soy): Derived from a common allergen source. May cause reactions in sensitive individuals. Safety Ratings: CIR: Safe as used
CAS #
61789-40-0
Form
Liquid
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Locks in moisture
Traditional Use
A modern synthetic ingredient derived from soybean oil and betaine. Developed as a mild surfactant for use in shampoos and cleansing products.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: CosIng · EWG · CIR