A highly-nourishing and reparative shampoo. 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.
PH Balance: 6-6.5
How to UseUse every time you shampoo or after rinsing with Olaplex no.3 Hair perfecter from hair, Lather, Rinse. Follow with Olaplex no. 5 Bond Maintenance Conditioner.