Echosline Coloured Hair M1, 500 , Hair Masks for Women, The Echosline Coloured Hair 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: improves the elasticity of hair fibres gives hair a brilliant shine extends the life of hair dye How to use: Wash with shampoo, then apply to damp hair. Leave to act as instructed on the packaging, then rinse thoroughly.