After shampooing, thoroughly towel-dry your hair. Apply an appropriate amount evenly through the hair, leave for about 5 minutes, then rinse thoroughly.
For stronger color, apply generously and evenly to dry hair before shampooing, using a wide-tooth comb to distribute it. Rinse after 13 minutes, shampoo, then repeat the usual application procedure above. Wash any color from your hands or skin with soap.