Here is the information we managed to obtain from Schwarzkopf: Step 1: Make sure your hair is clean and towel-dried. Step 2: Mix the Igora Vibrance Colouring Cream with the Igora Vibrance Activating Lotion according to the instructions on the packaging. Step 3: Apply the mixture evenly to the hair, from roots to ends. Step 4: Leave the mixture on for 20 minutes for a standard colour. For a more intense colour, you can leave it on for up to 30 minutes. Step 5: Rinse hair thoroughly until the water is clear and apply conditioner as usual.