This Surface Purify Weekly Shampoo is the best product for damaged hair. It delivers the five most essential benefits to achieve that ‘perfect hair day’ all in one easy step. Your hair will feel cleaner for longer periods of time, which means less washing and styling time! Scientists helped to create this genius solution by combining award winning, patented healthy hair molecule and their volumizing molecule to perfect this PhD Shampoo. You will have hair that is insanely smooth, voluptuous and well-conditioned. This product is perfect for all hair types.