Thick Fiber is a hair loss concealer that instantly transforms the appearance of thinning hair, helping you achieve fuller thicker looking hair. It is a cosmetic product made from natural keratin which is the same protein compound found in real human hair and helps thicken the thinnest of strands giving your hair a natural, healthier and fuller look. The hair fibers bond onto individual hair strands using the natural static charge created by our hair to thicken fine or thinning hair.