1. Squeeze cream from cream No.1 to fill up one groove on applicator comb. Then squeeze the same quantity of cream from Cream No.2 to fill up the other groove on applicator comb. 2. Apply the mixture to hair starting from the grayest area. Continue the application until all hair is well covered with the mixture. 3. Leave for 20-30 minutes depends on the existing hair color and the darkness of the desired color. Rinse hair thoroughly with water until water runs clear then shampoo well. Do not pre-shampoo your hair unless your hair has excessive wax, spray or oil from styling. Please read complete application inside the box.