Sodium Lauroyl Isethionate
AKA “Sodium ethyl 2-sulfolaurate, Igepon A, Sodium lauroylisethionate, Sodium 2-sulfoethyl laurate, Sodium 2-sulfoethyldodecanoate, Sodium lauryl isethionate, 2-Sulfoethyl laurate sodium salt, Dodecanoic acid
Synthetic
Ingredient Facts
Sodium lauroyl isethionate
AKA: Sodium ethyl 2-sulfolaurate, Igepon A, Sodium lauroylisethionate, Sodium 2-sulfoethyl laurate, Sodium 2-sulfoethyldodecanoate, Sodium lauryl isethionate, 2-Sulfoethyl laurate sodium salt, Dodecanoic acid
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Skin Conditioner
Hair Care
Plant Oil
Synthetic
Clean
A gentle cleansing agent that removes dirt and oil while creating a rich lather. It conditions skin and hair while reducing static, making it ideal for shampoos and body washes.
Effective at 25.9%
Formula
C14H27NaO5S
Mol. Weight
330.42
CAS #
7381-01-3
Form
Liquid
State
Other Solid
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.
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
Traditional Use
A synthetic surfactant developed in the mid-20th century combining lauric acid with isethionic acid. Engineered as one of the mildest sulfate-free cleansing agents, particularly for facial and baby products.
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
Concentration Guide
0.8%
51.0%
0%71%
Effective Range
CIR reported use: 1-44.9 | 0.8-6 | 11-51
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR