Sodium Myristoyl Isethionate
AKA “UNII-8D42TA2T6V, Tetradecanoic acid, 2-sulfoethyl ester, sodium salt, 2-Sulfoethyl tetradecanoate”
Synthetic
Ingredient Facts
Sodium myristoyl isethionate
AKA: UNII-8D42TA2T6V, Tetradecanoic acid, 2-sulfoethyl ester, Sodium salt, 2-Sulfoethyl tetradecanoate
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Skin Conditioner
Hair Care
Synthetic
Clean
A gentle cleanser and natural foaming agent that removes dirt and oil while helping keep hair soft, smooth, and manageable.
Formula
C16H31NaO5S
Mol. Weight
358.50
CAS #
37747-10-7
Form
Liquid
See origin →
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
Hair 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.
Anti-Inflammatory
Antimicrobial
Fights Acne
Traditional Use
A synthetic surfactant combining myristic acid with isethionic acid. Developed as a mild, conditioning cleanser for sensitive skin and baby care products.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Effects of Sodium Salts of Fatty Acids and Their Derivatives on Skin Permeation of Cromolyn Sodium.
Akinbote OE, Verana G, Dandekar AA, Tijani AO, Mishra D et al.
AAPS PharmSciTech, 2023
Effects of Sodium Salts of Fatty Acids and Their Derivatives on Skin Permeation of Cromolyn Sodium.
Akinbote OE, Verana G, Dandekar AA, Tijani AO, Mishra D et al.
AAPS PharmSciTech, 2023
Sodium Myristoyl Isethionate
European Commission
EU Cosmetic Ingredient Database (CosIng)
SODIUM SALT
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR