Olaplex N°4 Bond Maintenance Shampoo

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A highly-nourishing and reparative shampoo formulated with patented Olaplex Bond Building Chemistry. Restores, repairs and hydrates to add incredible shine and manageability every time you shampoo using the Olaplex 3-4-5 System. 
 
N°4 Shampoo repairs and protects hair from everyday stresses — including damaged hair, split ends, and frizz — by re-linking broken bonds. Leaves hair easier to manage, shinier and healthier with each use. N°4 is color-safe and proven to reduce breakage and strengthen all types of hair.
 
*Source: The NPD Group/ U.S. Prestige Beauty Total Measured Market, Hair Sales, Annual 2021
 
Directions For Use:
1. Use every time you shampoo OR after rinsing Olaplex N°3 Hair Perfector from hair. Lather. Rinse.
2. Follow with Olaplex N°5 Bond Maintenance Conditioner.