BioRepair-8 Scalp Exfoliating Brush is designed for thinning, color-treated hair to stimulate the scalp and maximize exfoliation. Flexible bristle brush with molded finger grip gently removes dead skin cells, build-up and sebum while increasing micro-circulation, creating the ultimate foundation for hair to thrive. For best results use with BioRepair-8 Anti-Thinning Shampoo.