Kérastase"s Laque Double Force is a multi-protective hair spray for weak hair. Its strengthening formula works to fortify the internal structure of the hair, leaving your style maintained and with long-lasting control. Formulated with Vita-Ciment, to restore hair"s inner substance; a UV Filter to protect hair from climate changes that undo the results of blow drying and styling; and Fixing Polymers to ensure long-lasting controlled hold. Weak hair is protected from environmental aggressors and left soft and silky and with long-lasting control. For best results shampoo and condition hair first with Kérastase"s Bain De Force and Ciment Thermique.