╰┈➤Brand new, factory sealed bottle Full size 3.3 fl oz Batch code shown in photos A powerful, clinically proven pre-shampoo treatment that leaves hair 3X stronger after just one use.* N°.3 is the complete bond builder to repair and strengthen hair at home by rebuilding all 3 hair bonds. Formulated for all hair types and all levels of hair health, this weekly treatment is key for your healthiest-looking hair. *When used with N°.4 Bond Maintenance® Shampoo