Myristyl Sultaine

AKA: 14933-09-6, Zwittergent 3-14, 1-Tetradecanaminium, Inner salt, N-tetradecyl-N, N-dimethyl-3-amino-1-propane sulfonate, N-dimethylammonium-1-propane-3-sulfonate, Myristyl sulfobetaine, 3-(N, N-Dimethylmyristylammonio)propanesulfonate, N-Tetradecyl-N, N-dimethyl-3-ammonio-1-propanesulfonate, 3-[dimethyl(tetradecyl)azaniumyl]propane-1-sulfonate
Synthetic
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Not Clean
1-Tetradecanaminium, N,N-dimethyl-N-(3-sulfopropyl)-, inner salt
Formula
C19H41NO3S
Mol. Weight
363.60
CAS #
14933-09-6
Form
Liquid
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
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.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks in moisture
Traditional Use
A modern synthetic amphoteric surfactant developed as a gentle cleansing agent. Created to provide mild detergency with reduced irritation compared to traditional surfactants.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
CANADApermitted
Regulatory Agencies
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR