Ammonium Cocoyl Isethionate

AKA: Coconut Sulfate, Gentle Coconut Cleanser
Allergen Warning
⚠️ Tree Nut (Coconut)
Synthetic
Cleanser
Plant Oil
Clean
Fatty acids, coco, 2-sulfoethyl esters, ammonium salts
CAS #
223705-57-5
Form
Liquid
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.
Removes Impurities
Cleansing Surfactant
Reduces Inflammation
Locks In Moisture
Traditional Use
Synthesized in the mid-20th century as a gentle sulfated surfactant from coconut oil. Created to replace harsher sulfates while retaining the cleansing benefits of coconut-derived ingredients used traditionally in tropical regions.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Potential Sensitizer
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types, gentle
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: CosIng · EWG · CIR