skincarecheck
INCI ingredient

Thioglycolic Acid

Thioglycolic Acid appears on 2 ingredient lists in our database, most often in hair removals.

What it triggers

  • Vegan originYesno animal source
  • FragranceNonot a perfume ingredient
  • ParabenNonot a preservative of this family
  • SulfateNonot a sulfate surfactant
  • SiliconeNonot a silicone
  • AlcoholNonot a drying alcohol

What it does

Thioglycolic Acid appears on 2 ingredient lists in our database, most often in hair removals.

It does not belong to any of the six groups we check, so it never changes a verdict.

We have not written the plain-language note for this ingredient yet; the facts above come straight from how it is classified.

Functions: antioxidant, depilatory, hair waving or straightening, reducing

Products with Thioglycolic Acid

in 2 products

Showing 2 of 2 products with this ingredient, most scanned first.

In the EU ingredient database

Functions listed by CosIng
  • antioxidant
  • depilatory
  • hair waving or straightening
  • reducing
  • antioxidant: Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.
  • depilatory: Breaking down the the mechanical strength of hair fibers so that they can be removed by mild scraping/rubbing.
  • hair waving or straightening: Modifying the chemical structure of the hair, allowing it to be set in the style required (permanent waves or hair straightening).
  • reducing: Changing the chemical nature of another ingredient by adding hydrogen (or removing oxygen).

CAS 68-11-1 · EC 200-677-4

EU regulation

Listed in Annex III (ref. 2a) of the EU Cosmetics Regulation, maximum concentration (a) (i) 8% (ii) 11% (b) 5% (c) 2% (d) 11% The abovementioned percentages are calculated as thioglycollic acid. (a) Hair products (b) Depilatories (c) Hair rinse-off products (d) Products intended for eyelash waving III/2a 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’

Source: CosIng, European Commission. Informative, no legal value; the regulation text is the reference.

Classification from the INCI name; product lists from Open Beauty Facts.Report a mistake