Clinically proven stronger hair and damage protection*, the Repair Ritual Strength Wash Duo is infused with science-backed bond technology, known to fortify weak hair bonds, and red algae, a nutrient-rich ingredient known to aid in overall resilience. This silky, color-safe duo combines science and nature for hair that is strengthened from the first use. Strands are left shiny, strong, and full of vitality. Rescue and repeat!