Free Kérastase Cristalliste sample with every Kérastase Cristalliste product purchased. Kérastase's Cristalliste Cristal Luminous Perfecting Masque 200ml is a nourishing shine complex for dry & sensitised long hair. KÉrastase Cristalliste Luminous Perfecting Masque is the first 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.