QUICK & EVEN FILLING THAT LOOKS NATURAL: Cover up receding hair quickly with the THICK FIBER hair fibers which use premium colored keratin fibers to match your hair’s natural color. Check our Black & Dark brown color to find the perfect hair enhancer color for your hair color. STAYS ON FOR LONG: THICK FIBER creates 100% natural look. THICK FIBER Hair Fibers resist wind, rain, and moisture for long-lasting results in all conditions. Our hair powder for thinning hair for women and men is resistant to sweat too, allowing you to have your hair full and naturally thick even on the most active days. No one will notice that you have used THICK FIBER unless you tell them. THICK FIBER will last until the hair is completely washed with shampoo