To use this Manic Panic Rock N' Roll Red hair dye, first, you must bleach your hair. We suggest using Manic Panic Flash Lightning Bleach Kits for pre - lightening. After that, apply the cream - formula semi - permanent hair color to your pre - lightened hair. This vegan formula will color and condition your hair at the same time. Before using this product for the first time, do a patch test on a small area of your skin. Wait for 24 hours. If you notice any redness or itching, don't use the product. To maintain the color, avoid frequent washing and use color - protecting shampoos. This hair dye is good for your hair as it has a herbal and protein complex that adds moisture and body to processed hair. Enjoy your new rock - inspired crimson look!