Deep Protect Density Mask leaves hair conditioned, manageable and soft. This professional treatment for fine hair is a density protection treatment that provides a reduction of up to 97% in hair breakage * Deep Protect Density Mask deeply conditions dry or colored hair. (Based on a hair length of 12 inches / 30cm, measured by the weight of the broken hair vs. the conditonin-free shampoo) protecting hair from damage for all hair types, including curly hair. Benefits: Professional hair mask. For damaged or colored hair with little thickness. Strengthening anti-breakage treatment. Leaves hair conditioned, manageable and soft. Helps protect and strengthen hair. Significantly reduces hair breakage: up to 97% reduction in hair breakage. Protects density. Nioxin is the # 1 salon brand for thicker and fuller hair, with over 30 years of experience in fine hair. Container: 500 ml