murphyMilkamidopropyl Betaine
AKA: Milk protein-derived betaine
Synthetic
Cleanser
Skin Conditioner
Not Clean
OriginDerived from coconut oil or palm kernel oil fatty acids combined with dimethylaminopropylamine. Synthesized through amidation of fatty acids followed by betainization with sodium chloroacetate.
1-Propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-, N-milk-fat acyl derivatives, inner salts
CAS #
188550-53-0
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Locks in moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed0 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Skin Irritant in Testing (CIR report on the ingredient group)
CIR report statement covering this group of ingredients / not tested individually (CIR 518)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2012
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR