Scalp Solutions Overnight Scalp Renewal Serum strengthens scalp defences overnight for protection against premature scalp ageing while you sleep for more beautiful hair with renewed vitality and shine.It delivers concentrated infusion of actives to strengthen scalp's natural protection and prevents scalp-skin inflammation associated with premature ageing.The overnight serum protects and maintains collagen integrity and helps prevent scalp imbalances. It restores moisture and suppleness to the scalp for all-day scalp comfort.98% Naturally Derived(1). Silicone Free. Vegan. Helps fight the visible signs of premature visible scalp aging.(2) Improves scalp hydration in one night and overtime. Soothes irritated scalp and scalp looks less red.(1) Per the ISO 16128 Standard, from plant, non petroleum mineral, and/or water. (2) +24% improvement in scalp barrier strength. TEST RESULTS +24% improvement in scalp barrier strength(1) (1) Clinical testing on 32 women, after using product for 1 week.