About Olaplex Nº4 Bond Maintenance Shampoo 250ml A highly-nourishing and reparative shampoo. Why it's special N°4 Shampoo repairs and protects hair from everyday stresses — including damaged hair, split ends, and frizz — by re-linking broken bonds. Other details 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.
Apply to damp hair, work through hair from root to tip creating a lather.
