Toppik Hair Building Fibers, made of colored keratin protein, blend undetectably with existing hair strands to instantly create the appearance of naturally thick, full hair. How it works: 1. Dry and style hair as usual. 2. Shake or spray (with Toppik Spray Applicator) Hair Fibers into thinning areas. 3. If applying Hair Fibers near the hairline, use Toppik Hairline Optimizer to achieve a natural-looking front hairline. 4. Gently pat hair to disperse Hair Fibers. 5. If desired, lightly comb, brush, or style your hair after applying Hair Fibers. 6. For best results, use Toppik FiberHold Spray to finish for longer-lasting results.