A leave-in serum infused with hyaluronic acid to hydrate, strengthen, and prevent breakage while protecting against heat up to 4506F for lightened and highlighted blonde hair. Suitable for fine, medium, and thick hair types and all hair textures including straight, wavy, curly, and coily. Key benefits include strengthening hair to prevent damage and breakage, protecting from heat damage up to 450\u00b0F, and smoothing hair to enhance shine. It contains hyaluronic acid and edelweiss flower for intense hydration and antioxidant protection. Directions: After shampooing and conditioning, apply a quarter-size amount to clean towel-dried hair. Massage onto lengths and ends. Do not rinse. Blow dry or air dry hair, then heat style as usual. Combine with the full Blond Absolu range for best results. This product is a professional stylist favorite for maintaining healthy blonde hair.