Toujours trend professional tint 100ml + 100ml 20vol developer Full coverage professional dye Works on all colors with full grey hair coverage Lifts 2-3 levels with 20vol Mixing: 1:1 for base breaking and resistant hair, 1:1.5 for light shades lifting Naturally dark hair or resistant hair- please bleach first/extend processing time Processing time is 30-40mins Chromaplex treatment can be added for damaged hair Professional use Important: When applying directly after bleaching, perm or any other chemical processing, be sure to shampoo the hair 100% clean before application. Otherwise the residue will "burn" off the new colour. Brazilian straightening treatment will remove most of the semi-permanent hair colours. Do not apply high heat to colored hair. Heat will burn some color off. Brazilian treatment will effect color deposit Hair dye does not remove or lighten previous ( dark colored) dyes