Combat 8 visible signs of ageing hair with the nexxus youth renewal elixir an sos treatment for mature hair this concentrated elixir envelops each strand in moisture comfort and care its leave in format ensures that hair is cared for throughout the day and shielded against environmental stresses that can make it age more quickly the breakthrough formula is infused with 100 pure elastin protein to improve strength and resilience whilst liquid pearl amps up the lustre and shine of your h