SureThik is a global brand manufacturing High Performance hair thickening fibers and hair loss products. All SureThik products are made in North America. SureThik only uses 100% natural Keratin fibers in every bottle and comes in 8 natural colors. Shake or spray SureThik fibers into weak and thinning hair and within seconds, SureThik creates the appearance of thicker and fuller hair. SureThik is sweat, wind and rain resistant but easily washes out with any shampoo.