This entry shows data from the EU CosIng database. An editorial description has not been written and reviewed yet.
Functions
- 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).
- Preservative
- Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.
- Reducing
- Changing the chemical nature of another ingredient by adding hydrogen (or removing oxygen).
EU regulation
EU · Annex V, entry 9Inorganic sulphites and hydrogensulphites (5)
- Maximum concentration
- 0.2% (as free SO2)
- As of
- 3 November 2026 · (EC) 2009/1223
EU · Annex III, entry 99Inorganic sulfites and bisulfites (12)
- Product type
- (a) Oxidative hair dye products (b) Hair straightening products (c) Self-tanning products for the face (d) Other self-tanning products
- Maximum concentration
- (a) 0.67% (as free SO2) (b) 6.7% (as free SO2) (c) 0.45% (as free SO2) (d) 0.40% (as free SO2)
- As of
- 3 November 2026 · (EC) 2009/1223