Hair fiber is a professional grade product- Made of natural fibers from plants safe even for sensitive scalp. Bonds to hair more securely does not require specially-made spray to glue fibers to your hair. Free of animal ingredients synthetic dyes fillers and preservatives. Why should you choose Hair fiber ? With Hair fiber your hair will look much fuller and thicker than using regular hair building fibers. More durable. It better withstands wind rain sweat and abuse No specially-made spray glue is required to fix fibers to the hair. Free of animal ingredients synthetic chemical dyes fillers and artificial preservatives. Most importantly with Hair Fiber you will have perfect natural look.