Give hair an instant boost with this hydrating shampoo engineered to cleanse hair gently yet effectively, while leaving it silky and shiny. Living Proof PhD Shampoo removes dirt sweat, oil, pollution, and product buildup Luxe lather gently yet effectively cleanses without stripping or over-drying strands Leaves hair silkier, shinier, and healthier looking with each wash 3x stronger with one wash* *after one use of Perfect hair Day Shampoo + Conditioner vs. untreated