This is the essential first step to treat blonde hair. Specially formulated with violet and pearl pigments, this illuminating serum corrects and eliminates brassy tones while rehydrating hair and providing heat protection up to 450°F (230°C). Hair is regenerated, soft to the touch, and illuminated from within. Brightens, tones, and eliminates brassy hues Provides heat protection up to 450°F (230°C) Helps repair and strengthen brittle, treatment-damaged hair Replenishes moisture to hydrate and soften dry hair Smooths the cuticle and enhances elasticity Adds shine for healthier-looking hair HOW TO USE Apply to damp hair before styling to protect, tone, and hydrate your hair.