The Eugène Perma Essentiel Keratin Force Spray is designed to provide intensive care and fortification for hair. This leave-in treatment works to reinforce the hair structure thanks to its keratin-infused formula. It offers protection against daily aggressors while improving manageability and shine without weighing the hair down. Ideal for use as part of a regular styling or care routine, this spray helps to restore vitality and strength to lackluster or weakened hair.