To use this Crazy Color Cyclamen hair dye, first do a strand and sensitivity test before applying. Then, shampoo your hair with a pH - neutral shampoo, skip the conditioner, and towel - dry. While your hair is still damp, put on gloves and apply the dye evenly. Leave it on for 15 to 30 minutes, then rinse well until the water runs clear. Here are some tips to maintain your color. Avoid dandruff or harsh shampoos as they can quickly strip the color. Use a sulfate - free or color - friendly shampoo and wash your hair as little as possible. After shampooing, rinse with cold water to seal in the color. Also, limit direct sunlight exposure and avoid swimming in chlorinated water as they can fade the color. And remember to patch - test any new product before regular use. If you experience redness or itching, stop using it.