This Living Proof Perfect Hair Day Night Cap Overnight Perfector is the absolute best product for damaged hair. This product is so easy to use and provides you with up to a weeks' worth of beautifully vibrant, shiny, manageable hair overnight! The benefits of this product last through over five shampoos! This product is specially formulated to boost the shine in your hair for days with weightless radiance refractors that outperform your regular silicone and oil product. It will not leave your hair limp and dull, but will provide amazing volume that will make your hair look full and sexy.