Decyl Betaine
AKA: 2644-45-3, 1-Decanaminium, N-(carboxymethyl)-N, Inner salt, Capryldimethylbetaine, CAPRYL BETAINE, Decyldimethylammonioacetate, LONZAINE 10S
Synthetic
Cleanser
Skin Conditioner
Hair Care
Plant Oil
Not Clean
(Carboxymethyl)decyldimethylammonium hydroxide
Formula
C14H29NO2
Mol. Weight
243.39
CAS #
2644-45-3
Form
Liquid
Functions
Antistatic
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.
Foam Boosting
Viscosity Controlling
Locks in moisture
Traditional Use
A synthetic amphoteric surfactant created in the 20th century for cosmetics. Designed to provide mild cleansing properties with improved skin compatibility compared to earlier surfactants.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR