Isooctyl Thioglycolate

AKA: 25103-09-7, Isooctyl mercaptoacetate, Acetic acid, Isooctyl ester, Isooctyl 2-mercaptoacetate, HSDB 2704, Mercaptoacetic acid
Synthetic
Not Clean
OriginSynthesized from thioglycolic acid and isooctyl alcohol through esterification reactions. Produced by combining the carboxylic acid with the alcohol using catalytic esterification methods.
Based on the available data, the CIR Expert Panel concluded that ... Isooctyl Thioglycolate is safe for use in hair straighteners, permanent waves, tonics, dressings, and so forth, wave sets, other non-coloring hair products, and hair dyes and colors, as described in this safety assessment, at concentrations up to 15.2% (as Thioglycolic Acid). Hairdressers should avoid skin contact and minimize consumer skin exposure.
Formula
C10H20O2S
Mol. Weight
204.33
CAS #
25103-09-7
Form
Liquid
State
Liquid
Skin Types
●all-skin-types
Best For
Uneven Texture
Pregnancy & Breastfeeding Safe
Caution
Functions
Hair Waving Or Straightening
Antioxidant Protection
Reduces Inflammation
Wound Healing
Changes hair texture
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
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