Make sure to keep your hair clean and dry before dyeing: don't do special care such as baking oil one week before dyeing; It is best to wash your hair the day before dyeing it; Do not use styling products on the day of dyeing your hair.
comb your hair before dyeing it. When dyeing your hair, you don't need to use a comb. Please massage your head thoroughly with your fingers until the hair dye milk is evenly distributed on each hair.
after the hair dye is evenly distributed on the hair, never cover or wrap the hair. Be sure to let the hair spread freely and make it fully contact with the air, so as to make the hair dye ingredients play the greatest role.