Thioglycolic acid
Thioglycolic acid
Thioglycolic acid is a synthetic chemical compound. It acts as an antioxidant in cosmetic formulations.
AntioxidantRestricted use
Ingredient
Roles & functions
Antioxidant — Limits oxidation and helps preserve the formula over time.
Regulatory framework
What the authorities say
| Authority | Status |
|---|---|
| Commission européenne (CosIng, Règl. 1223/2009) | Autorisé sous conditions |
| CLP classification (Reg. 1272/2008) | No CMR classification |
| ECHA — endocrine disruptor (human health) | Not identified as an endocrine disruptor |
| ECHA — Candidate List (SVHC, REACH Art. 59) | Not on the Candidate List (SVHC) |
| European Commission (Reg. 1223/2009, Annex III) | No cosmetic allergen subject to mandatory labelling |
| European Commission (EU catalogue of nanomaterials, Reg. 1223/2009) | No referenced nanoform |
| European Commission — Annex III (Reg. 1223/2009) — maj Fri, 07 Aug 2026 16:37:23 GMT | Permitted subject to restrictions (Annex III) — max (a) (i) 8% (ii) 11% (b) 5% (c) 2% (d) 11% The abovementioned percentages are calculated as thioglycollic acid in (a) Hair products (b) Depilatories (c) Hair rinse-off products (d) Products intended for eyelash waving — Conditions of use: (a) (b) (c) (d) Avoid contact with eyes Rinse eyes immediately if product comes into contact with them. (a) (c) (d) Wear suitable gloves Warnings to be printed on the label: (a)(i) (b) (c) Contains thioglycolate Follow the instructions Keep out of reach of children (a)(ii) (d) For professional use only Contains thioglycolate Follow the instructions’ — (a) (i) General use ready for use pH 7 to 9.5 (ii) Professional use ready for use pH 7 to 9.5 (b) ready for use pH 7 to 12.7 (c) ready for use pH 7 to 9.5 (d) ready for use pH 7 to 9,5 |
Products
Products containing it
Statistics
In Lou’s database
1
product listed
| Most frequent categories | Targeted care |
| Most frequent brands | Klorane |
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This information is reported factually and with attribution (authorities and publications cited). It does not constitute medical advice, for your situation, ask a pharmacist or a healthcare professional for advice.
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