Bione Cosmetics Keratin + Grain, 260 ml, Hair Masks for Women, The Bione Cosmetics Keratin + Grain 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: moisturises intensely improves the elasticity of hair fibres strengthens the hair fibre restores hair’s natural, healthy appearance makes it easy to comb through and prevents damage How to use: Wash with shampoo, then apply to damp hair.