Ammonium Cocoyl Isethionate

AKA: Coconut Sulfate, Gentle Coconut Cleanser

Synthetic

Cleanser

Clean

OriginDerived from coconut oil fatty acids, it belongs to the sulfonic acid ester chemical family. Synthesized through isethionation of coconut fatty acid derivatives, creating a mild surfactant compound.

Fatty acids, coco, 2-sulfoethyl esters, ammonium salts

CAS #

223705-57-5

Form

Liquid

Skin Types

●all-skin-types, gentle

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Allergen Warning

⚠️ Tree Nut (Coconut)

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

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.

EWG

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

Leave-onNot reported

Rinse-off1–44.9%

0%50%100%

CIR reported use · report published 2017

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR