Kérastase Chroma Absolu Masque Vert Chroma Neutralisant, 150 ml, Hair Masks for Women, The Kérastase Chroma Absolu Masque Vert Chroma Neutralisant 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: extends the life of hair dye strengthens the hair fibre regenerates the hair along its entire length How to use: Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly.