- Mix the colour and developer in a plastic or glass container (not metal), in equal parts and with a sufficient quantity for the volume and length of the hair.
- Mix with a brush until you obtain a gel and apply the product on dry and unwashed hair, starting from the roots.
- Leave to act for 40 minutes, it is important to respect the application times.
- Rinse carefully with plenty of lukewarm water until the water runs clear.
- Rinse with your head backwards, to avoid the product coming into contact with your eyes.