Kérastase Blond Absolu Masque Ultra-Violet, 200 ml, Hair Masks for Women, The Kérastase Blond Absolu hair mask is an essential step in your hair care ritual. Give it a moment to regenerate and it will repay you with vitality and beauty. Characteristics: regenerates the hair along its entire length gives hair a brilliant shine makes hair smell beautiful extends the life of hair dye How to use: Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly.