This Waterproof KPF 50+ Solaire Waterproof Protective Ottimal Protection The hair exposed to the sun. The wealth of his texture brings intense nourishment and gives the hair a bright wet effect. With a delicious and summer perfume. Protects color. Without silicones. The KPF, or Keratin Protection Factor, indicates the percentage of keratin protection, the main constituent of the hair, made by the specific sun product for the hair.