A cationic azo dye used in hair colouring products.
What it is
Basic Red 51 is a red cationic azo dye, 2-[[4-(dimethylamino)phenyl]azo]-1,3-dimethyl-1H-imidazolium chloride. As a "basic" dye it carries a positive charge and colours the hair directly, without an oxidation step. CosIng lists it as a hair-dyeing ingredient.
Where it is used
Found in semi-permanent hair colours, colour-depositing shampoos, conditioners and hair masks.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
The label does not show the amount of dye used or the final shade, which depends on the other dyes in the formula.
Functions
- Hair dyeing
- Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, permanent, depending on the length of time the colorant remains on the hair.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.
Products with this ingredient (10)
- Koloryzująca maska nadająca różowe refleksy do włosów blond · Vis Plantis
- Hair in Balance by ONLYBIO Toner Truskawkowy Milkshake 100 ml · ONLYBIO
- Hair in Balance by ONLYBIO Toner brzoskwiniowo-śmietankowy 100ml · ONLYBIO
- Hair in Balance by ONLYBIO Toner cherry-cola 100ml · ONLYBIO
- Hair in Balance by ONLYBIO Toner Cherry Pie 100 ml · ONLYBIO
- Hair in Balance by ONLYBIO Toner Arbuzowy 100 ml · ONLYBIO
- Hair in Balance by ONLYBIO Toner Marshmallow Blonde 100 ml · ONLYBIO
- Schwarzkopf Brilliance Hair Gloss Black 150mL · Henkel
- Mascarilla violín con aceite de chia · Deliplus
- Nutre Color, Berenjena · Nirvel