Biolage Essentials HydraSource, 100 ml, Hair Masks for Women, The Biolage Essentials HydraSource 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 hair is soft to the touch makes it easy to comb through and prevents damage goes deep into the hair fibre makes hair smell beautiful How to use: Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly.