Vichy Dercos Kera-Solutions Lifeless Ends Serum is specifically formulated for hair exposed to aggressions that alter its structure and appearance. Due to mechanical, chemical, thermal and UV aggressions, the hair not only becomes dry but also suffers fiber damage. With this in mind, Dercos Kera-Solutions has different concentrations of the Pro-Keratin Complex in each product to better respond to the hair specific needs in each area of the capillary fiber.