Toppik Hair Building Fibers in Light Brown blend undetectably with existing hair to instantly create the appearance of naturally thick, full hair. Benefits: Improves the appearance of thinning hair Made from Keratin Protein, the same protein found in human hair Forms a secure bond with existing hair Resists wind, rain, and perspiration Washes out with shampoo Toppik Hair Building Fibers are designed to conceal the appearance of thinning hair. The fibers are electrostatically charged to bond with existing hair, creating a natural-looking fullness. Suitable for all hair types and textures, these fibers can also be used to cover visible scalp along the part line or to camouflage roots between hair colorings. Ingredients Keratin, Ammonium chloride, Silica, Phenoxyethanol, Chlorphenesin, [May contain: Various colorants] Suggested Use Apply to dry, styled hair Shake or spray fibers onto thinning areas Gently pat hair to disperse fibers Style as desired For best results, finish with Toppik FiberHold Spray Caution: For external use only. If irritation occurs, discontinue use. Avoid contact with eyes and inhalation.