Goldwell Dualsenses Color Extra Rich, 500 ml, Hair Masks for Women, The Goldwell Dualsenses Color Extra Rich 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 hair is soft to the touch restores hair’s natural, healthy appearance How to use: Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly.