This Aveda Botanical Repair Strengthening Overnight Serum is designed to work while you sleep, targeting the hair's needs for repair and strength. It focuses on fortifying the hair structure to reduce breakage and improve resilience over time. Applying this serum nightly helps integrate intensive repair into your routine without adding extra steps to your daytime regimen. It is formulated to support hair health, preparing it to better withstand daily styling and environmental stressors.