Sodium Lauroyl Methyl Isethionate
AKA “SLMI, Mild Surfactant
Synthetic
Ingredient Facts
Sodium lauroyl methyl isethionate
AKA: SLMI, Mild Surfactant
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Plant Oil
Synthetic
Clean
Dodecanoic acid, methyl-2-sulfoethyl ester, sodium salt (1:1) Science: Functions: Cleansing, Surfactant - Cleansing Safety Ratings: CIR: Safe as used
CAS #
-
Form
Liquid
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
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
Lifts away dirt and oil
Traditional Use
A modern synthetic surfactant developed in the late 20th century as an ultra-mild cleanser. Engineered for sensitive skin formulations, combining properties of traditional coconut-derived cleansers with modern mild surfactant chemistry.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Potential Sensitizer
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR