Progressive keratin smoothing treatment Luminous, smooth, sensuous hair up to 2/3 months. Perfectly eliminates frizz Progressive treatments improve hair-straightening effect and its duration. Innovative Keratin technology for optimal smoothing. Kera-Collagen Complex & Babassu Oil for superb conditioning and shine. Excellent results on all hair types thanks to the special silver smoothing fluid formula which protects hair color on blondes, highlights and natural white hair. All products are paraben free. Formaldehyde free.