The smoothing fluid with keratin from the Keratin Liss Care line works to reconstruct severely damaged hair. How to use: with the help of a brush, distribute Phase no. 2 Keratin Liss Care fluid on washed and wet hair, from roots to ends. Leave on for 20 minutes. Blow-dry the hair, then run the straightening iron over each strand several times (at least 5 times). Rinse again, proceed by applying Phase no. 3 Keratin Liss Care conditioner. Formaldehyde-free. Brand: Keratin Liss Care Effects: Smoothing, Nourishing, Restructuring Hair Type: Frizzy hair, Damaged hair, All hair types