Sodium Methyl Oleoyl Taurate

AKA: Metaupon paste, 137-20-2, SODIUM N-METHYL-N-OLEOYLTAURATE, Hostapon T, Nissan diapon T, Adinol T, Igepon T, Nissan diapion S, Igepon TE
Synthetic
Cleanser
Plant Oil
Not Clean
Sodium 2-[methyloleoylamino]ethane-1-sulphonate
Formula
C21H40NNaO4S
Mol. Weight
425.60
CAS #
137-20-2, 7308-16-9
Form
Liquid
State
Liquid; Dry Powder
Functions
Antistatic
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Foaming
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Surfactant Cleansing
Anti-Inflammatory
Antimicrobial
Fights Acne
Removes dirt and impurities
Creates cleansing foam
Lifts away dirt and oil
Reduces flyaways
Traditional Use
A synthetic taurate-based surfactant derived from oleic acid. Created in the late 20th century to provide mild cleansing with improved biodegradability 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
EUrestricted
JAPANrestricted
CANADArestricted
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