Hairboost Men's Hair Concealer & Volumizer Product is cream based. It does not dye the hair at all and is suitable for all hair except white and light blonde hair. The product darkens the scalp and gives the hair a natural appearance. One product can be used for 6 to 9 times, depending on the hair lightness, and has a permanence of 7-15 days. Shower-pool-sauna-sea etc. Not affected. It does not have any negative effects on the hair depending on the skin structure. Instructions for Use: Wash and dry your hair before application. Apply by separating the area to be applied with the help of a comb. Apply the amount of a hazelnut to each area and apply it to the area where the hair is sparse. Wait 10 - 15 MINUTES and wash your hair once. Do not forget to wear the gloves that come with it before application. It reduces permanence when using soap and menthol shampoo.