Myristamidopropyl Betaine

AKA: 59272-84-3, 1-Propanaminium, N-(carboxymethyl)-N, Inner salt, SOFTAZOLINE MPB, VISTA MAP, (carboxymethyl)dimethyl-3-[(1-oxotetradecyl)amino]propylammonium hydroxide, ACB 14, (Carboxymethyl)dimethyl-3-((1-oxotetradecyl)amino)propylammonium hydroxide
Synthetic
Cleanser
Skin Conditioner
Hair Care
Plant Oil
Not Clean
(Carboxymethyl)dimethyl-3-[(1-oxotetradecyl)amino]propylammonium hydroxide
Formula
C21H42N2O3
Mol. Weight
370.60
CAS #
59272-84-3
Form
Liquid
State
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
Locks in moisture
Traditional Use
Synthetic amphoteric surfactant derived from myristic acid, developed in the late 20th century for use in gentle cleansing products; no traditional use.
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-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