Olaplex No. 4 Bond Maintenance Shampoo 33.8oz K18 BIOME Oléoactif for a balanced

BIOME Oléoactif for a balanced and strengthened microbiota

giving hair a lightweight hold and leaving it feeling silky smooth

Apply to damp hair for styling

This lightweight leave-in formula offers heat protection

The hairspray dries quickly and doesn't leave any sticky residue

Olaplex No. 4 Bond Maintenance Shampoo 33.8oz K18 BIOME Oléoactif for a balancedA highly moisturizing, reparative shampoo that leaves hair easy to manage, shiny and healthier with each use. N4 is color safe, sulfate free, and proven to reduce breakage and strengthen all types of hair. Directions Apply and massage product throughout hair. Start with a nickel sized amount and adjust as needed. Rinse product from hair. Follow with Olaplex N5 Bond Maintenance Conditioner (sold separately) Use every time you shampoo. Follow with No. 5