SureThik is the incredible, premium hair fibers, made of keratin protein that has been precision cut into tiny micro-sized fibers. These lightweight, hair fibers build upon your existing hair to produce dramatic density, volume and total coverage. SureThik is made from the same keratin protein as your own natural growing hair, make it virtually undetectable. SureThik’s exclusive long-lasting formula is sweat, wind and rain resistant and is a completely safe solution for both men and women.