The OI Routine

Complete set of best-selling OI products for all hair types Routine of our best-selling OI products designed for all hair types. OI Shampoo gently cleanses while delivering moisture, boosting shine, and detangling. OI Conditioner deeply hydrates and softens, adding a healthy, natural shine. Our do-it-all OI All In One Milk controls frizz, hydrates, protects, and softens to complete your smooth, naturally shiny look. Infused with antioxidant-rich roucou oil, this complete OI routine protects hair from external stressors while leaving it silky, full-bodied, and beautiful. Practice sustainability with the 500ml refill pouch. Each refill pouch reduces plastic use by 71% compared to two 250ml shampoo bottles. Plus, they're fully recyclable!