Olpalex N°4 Bond Maintenance Shampoo

STRENGTHENS, RESTORES, AND REPAIRS A highly-nourishing and reparative shampoo that leaves hair easier to manage, shinier, and healthier with each use. It repairs and protects hair from everyday stresses — including damaged hair, split ends, and frizz — by re-linking broken bonds. N°4 is color-safe and proven to reduce breakage and strengthen all types of hair. PH Balance: 6-6.5. How to Use  Apply and massage product throughout hair.  Rinse product from hair. Follow with Olaplex N°5 Bond Maintenance Conditioner (sold separately). When to Use Formulated for daily/ every wash use.