L'oreal Pro Fiber Restore Bi-Phasic Serum is part of a long-lasting hair care system that promises to treat your fine, coarse, or colour treated hair. Utilizing professional restoring technology to prolong the effect of the Pro Fiber in-salon treatment. The leave in serum delivers long-lasting care to protect from heat styling up to 230°C, smooth hair ends and restore for shinier, healthier, lightweight hair. Damaged locks look smooth and soft from root to tip.