THE GREATEST STRENGTH SET. Benefits: Reverses hair damage in as little as 3 minutes. Hydrates, smooths, nourishes, and detangles. Strengthens and protects scalp barrier and microbiome. Patented OLAPLEX Bond Technology Strengthens hair and repairs damage on a molecular level by rebuilding the disulfide bonds that give hair its strength. Gentle Blend of Coconut Oil-Derived Surfactants Provides an easy, abundant lather that leaves the scalp and hair feeling hydrated. Proprietary Scalp Barrier-Building Complex Patented OLAPLEX Bond Building Technology re-links disulfide bonds within keratin to strengthen the Stratum Corneumthe scalp barrier. Plus, a blend of essential fatty acids and ceramides provides nourishing lipid replenishment to hydrate a dry scalp. Research Results: 3X stronger hair after one use*. 90% smoother, better detangling, more conditioned**. 68% reduction in breakage**. *N3 Hair Perfector. **N.4 and N.5 Bond Maintenance Shampoo and Conditioner. Includes: No.3 Hair Perfector (3.3 oz). No.4 Bond Maintenance Shampoo (3.3 oz). No.5 Bond Maintenance Conditioner (3.3 oz). No.0.5 Scalp Longevity Treatment (0.17 oz).