Olaplex's first leave-in serum, the No. 9 Nourishing Bond Protective Hair Serum ever. Pollution can damage our hair on a daily basis (think: dull lengths, split ends, frizz—the list is endless), but a few pumps of this create a protective layer on strands to stop pollution in its tracks. Oh and of course, it's also charged with the same bond-repairing technology you know and love from OLAPLEX, ensuring that it helps restore hair to its former glory, too.
Olaplex No9 Protector Nourishing Hair Serum 90 ml