This fast-acting extra-shine serum reinforces blonde hair. Its innovative formula enriched with Biacidic bond complex and Illuminating amino concentrate strengthens and repairs the hair fiber, adds extra shine, prolongs color brightness, and preserves intensity. 37% stronger hair against breakage* 6.4 times more luminous hair** Luminous color up to 6 weeks*** Preserves color intensity up to 83%**** Promotes hydration and softness, leaving hair silky and easy to detangle Time-saving treatment with no processing time HOW TO USE After washing with Silkening Shampoo, remove excess water from hair. Apply Instant Bonding Glow serum directly to lengths and ends. Massage to cover hair evenly. Comb to distribute product to roots. Rinse thoroughly. Dry and style as desired.