Kallos Keratin, 1000 ml, Hair Masks for Women, The Kallos 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: moisturises intensely hair is soft to the touch makes it easy to comb through and prevents damage How to use: Leave to act as instructed on the packaging, then rinse thoroughly.