Directions Step 1. Shampoo - use sachet of Charcoal Pre-Colour Shampoo. Towel dry and comb hair. 2. Apply put on gloves. Mix Colour Gel into Fix bottle, tighten applicator lid shake. immediately. 3. Wait colour with cap wait 30 minutes, or 40 minutes for grey hair coverage. 4. Rinse lather a little warm water. thoroughly until water runs clear. condition using sachets provided. style as usual. Root touch-up. Follow the instructions above but initially apply to root area only. Ten before rinsing, rest mid-lengths ends. per step 4 above.