MEA-Sulfite

AKA: 2-Hydroxyethylammonium hydrogen sulphite, M-ESN, MEA-SULFITE [INCI], 2-AMINOETHANOL HYDROSULFITE

Synthetic

Not Clean

2-Hydroxyethylammonium Hydrogen Sulphite

Formula

C2H9NO4S

Mol. Weight

143.16

CAS #

13427-63-9

Form

Powder

Functions

Hair Fixing

Holds hair in place

Traditional Use

A modern synthetic preservative and antioxidant ingredient developed for cosmetics. Used to prevent oxidation and microbial growth in formulations.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU✔ permitted

JAPAN✔ permitted

CANADA✔ permitted

Regulatory Agencies

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed1 review →

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

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR