Ethanolamine Thioglycolate
molecular structure · PubChem
AKA: 126-97-6, Monoethanolamine thioglycolate, (2-Hydroxyethyl)ammonium mercaptoacetate, THIOGLYCOLIC ACID MONOETHANOLAMINE SALT, N-(2-HYDROXYETHYL)AMMONIUM THIOGLYCOLATE
WHAT IS IT?
Synthetic
Not Clean
(2-Hydroxyethyl)ammonium mercaptoacetate
Formula
C4H11NO3S
Mol. Weight
153.20
CAS #
126-97-6
Form
Liquid
State
Liquid
WHAT DOES IT DO?
Functions
Depilatory
Hair Waving Or Straightening
Reducing
Reducing Agent
Wound Healing
Changes hair texture
Removes unwanted hair
Chemical reduction
Traditional Use
A synthetic reducing agent developed in the mid-20th century specifically for use in hair permanent wave solutions and depilatory products. Created to chemically alter protein bonds in hair and dissolve hair.
IS IT CLEAN?
EWG
4
CIR
Safe as used
Pregnancy
No
Restricted By
Credo Beauty
Sephora Clean at Sephora
Beauty Heroes
MADE SAFE
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA
✔ permitted
EU
✔ permitted
JAPAN
✔ permitted
CANADA
✔ permitted
Regulatory Agencies
EWG
CIR
FDA
EU COSING
Health Canada
IS IT FOR ME?
Skin Types
●
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
CAN I TRUST THIS?
The paper trail
🔬
Peer-reviewed
none on file
⚖️
Regulatory
1 listing →
🛡️
Safety-assessed
1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR