Kérastase Blond Absolu Blonde Guard Spray is designed to protect blonde hair from the everyday factors that can leave it feeling dry, dull and less vibrant. Whether your blonde is highlighted, balayaged, bleached or naturally light, this multi-benefit leave-in spray helps preserve brightness, softness and shine while defending against heat styling, UV exposure, chlorine and salt water. It's the perfect finishing step for maintaining healthy-looking blonde hair between salon visits. At the heart of the formula is Brightening Hydration Science, combining two molecular weights of Hyaluronic Acid to deliver deep hydration while helping lock moisture into the hair fibre. This creates a protective hydra-barrier that helps prevent dehydration and maintain softness. Vitamins C+E provide antioxidant protection while helping preserve the clarity and brightness of blonde tones, reducing the visible effects of environmental aggressors that can leave hair looking dull. The fluid milk texture absorbs instantly into the hair without leaving residue or heaviness. Hair feels softer, smoother and easier to detangle immediately after application, while ongoing use helps maintain salon-fresh brightness and touchable softness. Whether you're spending time in the sun, swimming or regularly heat styling, this protective spray helps keep blonde hair looking luminous, hydrated and healthy.