Joanna Professional Keratin, 500 g, Hair Masks for Women, The Joanna Professional Keratin 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: strengthens the hair fibre regenerates the hair along its entire length improves the elasticity of hair fibres hair is soft to the touch restores hair structure goes deep into the hair fibre takes care of the lengths of weakened hair How to use: Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly. Only for professional use.