Biolage Advanced Full Density Shampoo gently cleanses to remove follicle clogging impurities to instantly make hair look and feel healthier. Ideal for thin or brittle hair prone to breakage, Biolage Full Density reduces breakage by up to 63% for fuller looking hair. When used as a system of Shampoo and Conditioner, breakage is significantly reduced for fuller-looking, thicker-feeling hair. Designed to protect hair against ageing and stress, Full Density Thickening Shampoo will fortify and protect hair leaving it feeling and looking great.