Glyceryl Thiopropionate
AKA “67874-65-1, 3-Mercaptopropanoic acid, glyceryl monoester, EINECS 267-492-9, Propanoic acid, 3-mercapto-, 2, 3-dihydroxypropyl ester, DTXSID20867374, RefChem:869510, DTXCID50815565, 3-Dihydroxypropyl 3-mercaptopropionate, 3-dihydroxypropyl 3-sulfanylpropanoate, Glyceryl 3-mercaptopropanoate
Ingredient
Ingredient Facts
Glyceryl thiopropionate
AKA: 67874-65-1, 3-Mercaptopropanoic acid, Glyceryl monoester, EINECS 267-492-9, Propanoic acid, 3-mercapto-, 2, 3-dihydroxypropyl ester, DTXSID20867374, RefChem:869510, DTXCID50815565, 3-Dihydroxypropyl 3-mercaptopropionate, 3-dihydroxypropyl 3-sulfanylpropanoate, Glyceryl 3-mercaptopropanoate
Ingredient · Hair Waving Or Straightening · EWG: 4
Synthetic
Not Clean
2,3-Dihydroxypropyl 3-mercaptopropionate
Formula
C6H12O4S
Mol. Weight
180.22
CAS #
67874-65-1
Form
Liquid
See origin →
Functions
Hair Waving Or Straightening
Reducing
Reducing Agent
Changes hair texture
Chemical reduction
Traditional Use
A modern synthetic ingredient combining glycerin with thiopropionic acid. Developed in the 20th century as an antioxidant and preservative in cosmetic formulations.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR