The OLAPLEX Essential Repair and Strength Kit includes four powerhouse products designed to restore, strengthen, and protect hair. Begin with No. 3 Hair Perfector, a pre-shampoo treatment that reduces breakage and strengthens hair from within. Follow with No. 4 Bond Maintenance Shampoo, which gently cleanses while helping to maintain healthy bonds and restore moisture. Then, nourish with No. 5 Bond Maintenance Conditioner to hydrate, smooth, and strengthen hair, leaving it soft and manageable. Finish with No. 7 Bonding Oil, a lightweight yet powerful formula that adds brilliant shine, reduces frizz, and provides heat protection up to 450°F. This kit is perfect for anyone looking to maintain strong, healthy, and shiny hair.