Our dark brown hair care product is carefully formulated with glycerin and polydimethylsiloxane. Designed specifically to reduce frizz and split ends and minimize scalp irritation during use. The usage method is extremely convenient: 1. Pre-staining test: Please conduct a skin sensitivity test before use. If symptoms such as redness， swelling， itching or burning occur， stop using it immediately and clean the remaining product. Please make sure your hair is dry before use. 3. Wear protective equipment when operating and apply cream to areas that may come into contact with the skin， such as the face， neck， behind the ears and arms. 4. Apply the hair dye evenly to your hair， making sure every strand is covered with it. Wait for 15 to 30 minutes to allow the hair dye to fully penetrate into your hair. 5. Rinse your hair with clean water and blow-dry it. And it can improve the luster of the hair， keep the color for a longer time， and maintain a natural moisture balance when dyeing hair.