Toppik,Fashioned out of the most premium Keratin derived from a natural wool source, Toppik Hair Building Fibers are nearly identical to human hair, blending naturally and undetectably. Other Keratin fibers are derived from lower-grade sources like fish bones, nails and hooves, making their texture and appearance lack in comparison to Toppik's topmost quality. The natural Keratin used by Toppik has an innate static charge that holds the Fibers to any hair type. Imitators made of cotton, plant-based materials and rayon do not have this natural static charge. Consequently, there is nothing attracting them to your hair, so they tend to clump, shift, fall to your scalp and look unnatural. Meanwhile, Toppik stays securely in place, latches on through the toughest weather and remains oblivious to perspiration.