This Waterproof and non -fat protective fluid KPF 50+ Solaire offers optimal hair protection exposed to the sun. Its light formula prevents dehydration of the hair, making them soft without weighing them down. With a delicious and summer perfume. 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.