The Sebastian Professional No. Breaker Leave-In Spray works to fortify weakened hair, supporting up to 99% less breakage*. Designed to be kind to your locks, the dual-benefit formula also acts as a styling aid. Apple acid & styling polymers target the cuticle, helping to reinforce hair bonds while restoring the look of dry, damaged strands. Perfect for hair compromised by hot tools & chemical treatments, the hybrid bonding & leave-in spray works to promote a strong, healthy-looking mane. *vs a low conditioning shampoo.