Living Proof Night Cap is an easy-to-use weightless overnight treatment that works on damp or dry hair to provide up to one week of more shiny, vibrant, manageable hair overnight. Living Proof Overnight Perfector is Powered by the brand’s patented ‘Healthy Hair Molecule’ (OFPMA), amino acids and time-released conditioners, this hardworking formula protects and seals your hair’s cuticle for long-lasting vibrant colour while making hair stronger, visibly healthier and more manageable, smooth, shiny and soft.