Treat System Dy by Day Maintenance Home Care DBD White Kit 3 Prod. - SollerDamage repair system that keeps the hair treated and revitalized. Promotes three dimensional shine by gently cleaning, without damaging the hair fiber. Active Mild surfactants. Function: Cleans and removes oil without damaging the fiber. How to Use: Apply Shampoo Day by day on wet hair, massaging it gently until it obtains abundant foam. Rinse and repeat the operation if necessary. After washing your hair with the Treat System Shampoo, apply the Mask