Biolage Essentials SmoothProof, 100 ml, Hair Masks for Women, The Biolage Essentials SmoothProof 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 lengthgives hair a brilliant shineimproves the elasticity of hair fibresmakes hair smell beautifulstrengthens the hair fibrerestores hair structureHow to use:Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly.