1. Apply a shampoo with an alkaline pH.
2.Rinse and remove excess water, using a towel to path air dry.
3. In a bowl mix a single-dose pack of Color Back with warm water at a ratio of 1:6 (1 pack to be mixed with 120ml of water).
4.Put on gloves and massage the mixture into hair, from roots to tips.
5.Leave undisturbed for 20 minutes under a heat source.
6.Rinse carefully.
7.Wash with shampoo followed by conditioner.
8.Rinse once again and dry hair well.
9.Apply hair dye as usual.
If necessary, up to three consecutive treatments of Color Back may be carried out on the same day, rinsing hair well after each application.