To use this hair dye, first do a strand and sensitivity test. Shampoo your hair with a pH neutral shampoo and don't use conditioner. Then towel dry your hair. Apply the dye directly while your hair is still damp, spreading it evenly (wear gloves). Leave it on for 15 - 30 minutes and then rinse thoroughly until the water runs clear. Here are some tips: Avoid dandruff or harsh shampoos as they can strip the color. Use a sulfate-free or color-friendly shampoo and wash your hair as little as possible. After shampooing, rinse your hair with cold water to seal in the color. Also, avoid too much direct sunlight and swimming, as chlorine can strip the color from your hair. And always do a patch test before using any new product. If you experience redness or itching, stop using it.