No. 4 Bond Maintenance Strengthening and Reparative Hair Shampoo - NO 4 BOND MAINTENANCE SHAMPOO 8.5FLOZBenefitsGently cleanses hairNourishes and hydrates hairRepairs and maintains for healthy-looking hair4&5 System -Improves manageability and softness -Increases shine and leaves hair looking healthier -Produces softer, shinier, and healthier-looking hair with each use, reduces damage, split ends, frizz, and flyaways -Protects against future damageAllure 2022 Readers' Choice Award WinnerOLAPLEX products are thoroughly tested in accordance with industry standards in-house and by independent third-party laboratories for safety and efficacyResearch Results73% smoother, more conditioned, easier detangling *tested on bleached hair49% reduction in breakage90% smoother, better detangling, more conditioned* (*When used as a system of No.3, No.4, No.5)Formulated WithoutNutsParabensPhosphatesPhthalatesSulfatesGlutenDEAAldehydesFormaldehyde - No. 4 Bond Maintenance Strengthening and Reparative Hair Shampoo