!Keune introduces a new revolutionary concept to tame curly and frizzy hair! Keune Keratin Smoothing Treatment is an easy 5-step process with a spectacular result. It is 100% folmaldehyde free and contains essential parts of the native keratin protein that takes conditioning to a whole new level. The most important building block of hair is keratin. Keune Keratin Smoothing delivers active keratin to the outside and deep into the hair cortex, leaving it silky smooth and easy to manage.The treatment lasts for 6 to 12 weeks. Glamorous hair for months!