A highly-nourishing and reparative shampoo. N°4 Shampoo repairs ad 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. PH Balance: 6-6.5 How to Use Apply and massage product throughout hair. Thoroughly rinse product from hair. Follow with N°5 Bond Maintenance Conditioner (sold separately). WHERE: Concentrate on roots. WHEN: Formulated for daily or every wash use. FOR: All hair types, especially those needing clarifying or oil control. - Paraben-Free - Sulfate-Free - Phthalate-Free