Nioxin Deep Protect Density Mask for colored or damaged hair, leaves them conditioned, manageable and smooth. This professional thinning hair treatment is a density-protection treatment that provides an up to 97% reduction in hair breakage* Deep Protect Density Mask deeply conditions dry or colored hair. (*Based on hair length of 12 inch/30cm, measured by the weight of broken hair vs. non-conditioning shampoo) protecting hair against damage for all hair types, including curly hair.Nioxin is the N°1 Salon Brand for thicker and fuller hair with more than 30 years expertise in thinning hair.