Derived from a natural wool source that is nearly identical to human hair  Made from all-natural, colored keratin protein that blends undetectably with existing hair  Helps fill in thinning areas while concealing hair loss  Instantly creates the appearance of naturally thick, full hair  Resists wind, rain & perspiration for long-lasting results  Great as a root touch-up between colorings  To use: Spray onto hair using the XFusion Spray Applicator. Use the XFusion Hairline Optimizer when concealing any areas near the front hairline 