1. Perform a skin allergy test 48 hours prior to use 2. Put on the gloves 3. Squeeze contents of Colour Crme tube into the Developer bottle 4. Close the Developer bottle with the nozzle and shake well to mix 5. Apply entire mixture section by section onto all of your hair and distribute evenly using your hands 6. Leave the mixture for 30 minutes 7. Rinse off the colour and condition with the repair mask provided in the box