Allowed in EU

Dithiothreitol

A cosmetic ingredient used as hair waving or straightening, reducing in skincare, haircare, and personal-care products sold in the European Union.

What is it?

2,3-Butanediol, 1,4-dimercapto, (R*,R*)-

What does it do?

Dithiothreitol is listed in the EU cosmetic ingredient inventory with the following declared functions:

  • Hair waving or straightening

    permanently changes the shape of hair through chemical reduction and re-oxidation of the hair's disulfide bonds

  • Reducing

    a reducing agent — donates electrons to break chemical bonds, used in perms and depilatories

EU regulatory status

Dithiothreitol is allowed for use in cosmetic products in the European Union under Regulation 1223/2009. It is not subject to a specific Annex restriction at the time of writing.

Frequently asked questions

What is Dithiothreitol?

Dithiothreitol is a cosmetic ingredient catalogued in the EU CosIng database. 2,3-Butanediol, 1,4-dimercapto, (R*,R*)-

Is Dithiothreitol allowed in cosmetics in the EU?

Yes. Dithiothreitol is allowed for use in cosmetic products in the EU under Regulation 1223/2009.

What does Dithiothreitol do in cosmetic products?

Dithiothreitol is declared in the EU cosmetic ingredient inventory with these functions: hair waving or straightening, reducing.

What is the CAS number of Dithiothreitol?

The CAS (Chemical Abstracts Service) number for Dithiothreitol is 3483-12-3.

Related ingredients

Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 15/10/2010