For those of us who take our hair treatments extremely seriously, there’s Olaplex No.0 Intense Bond Building Treatment. This priming treatment has been made with the same bond-building technology as your beloved Olaplex No.3, and in fact, it’s designed to be used in tandem with that product. If you want to level up the same strengthening, bond-rebuilding benefits you’re used to seeing with your Olaplex treatments, you’ll want to add Olaplex No.0 to your routine.