TOPPIK resists wind, rain and perspiration but removes easily with shampoo. , Dry and style hair as usual. Shake or spray into thinning area. Gently pat hair to disperse fibres. Suitable for men and women, TOPPIK Hair Fibres instantly give you the appearance of thicker, fuller hair by concealing signs of thinning. The Keratin proteins used to create Toppik Hair Fibres is nearly identical to human hair and allows the fibres to blend naturally and undetectably. Toppik Hair Building Fibres have a strong natural static charge that creates a magnetic effect, tightly binding the Fibres to even the finest strands of human hair. This bond keeps the Toppik Hair Fibres in place throughout the day, even through rain, wind and perspiration. They will stay in place until you next shampoo your hair. Shake Toppik Hair Building Fibres liberally onto thinning areas. For best results, apply to clean, freshly dried hair before use of styling products. Pat hair gently after application to settle fibres in place.