Formulated specifically for thinning hair types, the Nioxin Hair Booster, Cuticle Protection Treatment seeks to condition and protect hair. The leave-in treatment nourishes and strengthens the look of hair experiencing low density or damage. Infused with a KeraPro complex, the formula enriches strands with intense hydration to lock in much-needed moisture. The thinning hair treatment is designed to be applied twice a day, every day.