Kérastase Cristalliste Luminous Perfecting Masque is a nourishing shine complex for dry & sensitised long hair.Kérastase Cristalliste Luminous Perfecting Masque is the 1st Kérastase primer masque which brings lightness & deep nourishment to long hair. With Ceramides to reinforce the hair & replenish the cuticle for a free flowing result whilst Dry Oil brings nourishment & natural movement to the hair.