Ammonium Myristyl Sulfate

AKA: Ammonium tetradecyl sulfate, Ammonium tetradecyl sulphate, 52304-21-9, 1-Tetradecanol, Hydrogen sulfate, Ammonium salt, TETRADECYL AMMONIUM SULFATE

Synthetic

Cleanser

Not Clean

Ammonium tetradecyl sulphate

Formula

C14H33NO4S

Mol. Weight

311.48

CAS #

52304-21-9

Form

Powder

Functions

Cleansing

Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.

Foaming

Cleansing

Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.

Removes Impurities

Creates Lather

Cleansing Surfactant

Reduces Inflammation

Locks In Moisture

Removes dirt and impurities

Creates cleansing foam

Lifts away dirt and oil

Traditional Use

Created in the 20th century as a sulfated derivative of myristic acid for use as a surfactant. Designed to provide cleansing properties without significant traditional use history.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed2 reviews →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR