Glyceryl Thiopropionate

AKA: 67874-65-1, 3-Mercaptopropanoic acid, Glyceryl monoester, Propanoic acid, 2, 3-dihydroxypropyl ester, 3-Dihydroxypropyl 3-mercaptopropionate, 3-dihydroxypropyl 3-sulfanylpropanoate, Glyceryl 3-mercaptopropanoate
Synthetic
Not Clean
2,3-Dihydroxypropyl 3-mercaptopropionate
Formula
C6H12O4S
Mol. Weight
180.22
CAS #
67874-65-1
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Functions
Hair Waving Or Straightening
Reducing
Reducing Agent
Changes hair texture
Chemical reduction
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used · CIR re-review: use not supported (2025)
Pregnancy
Caution
CIR Safety Findings
Not Phototoxic (CIR Panel on the ingredient group)
CIR Panel statement covering this group of ingredients; not tested individually (CIR 344)
Regulatory Status
USAunder review
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR