A serum for your hair routine. The No.9 Bond Protector Nourishing Hair Serum is Olaplex’s newest arrival and packs a punch for a myriad of reasons. Full of antioxidants, it’s lightweight with no stickiness, super nourishing and protecting for your hair. You can expect to see instant results as locks are left shiny, full of volume, detangled and frizz is eliminated, keeping your hair protected from the daily chaos of life. You can even use in between washes for extra protection, how good!