The Nº.0 Intensive Bond Building Hair Treatment, infused with patented OLAPLEX Bond Building technology is an intense treatment that boosts the efficacy of OLAPLEX Nº.3 Hair Perfector for deeper repair while strengthening and protecting the integrity of the hair.155ml.Made in USA. The Nº.0 Intensive Bond Building Hair Treatment boosts the efficacy of OLAPLEX Nº.3 Hair Perfector by absorbing quickly to jumpstart repair deep within the hair strand.Nº.0 Intensive Bond Building Hair Treatment strengthens and rebuilds hair bonds and is scientifically proven: 68% more repair & 3x stronger hair* *When used as a two-part system in just one use. Water (Aqua/Eau), Bis-Aminopropyl Diglycol Dimaleate, Phenoxyethanol, Sodium Benzoate OLAPLEX is a system that rebuilds the damaged disulphide bonds in your hair that are broken during the chemical process. Bis-Aminopropyl Diglycol Dimaleate - a single molecule, works in a unique way to quickly and effectively repair broken bonds and restore healthy hair. This active ingredient is included in every one of OLAPLEX's products, imparting them with reparative and protective characteristics. This brand is part of BEAUTYSPACE, the ultimate curator of the world’s most in-demand beauty and icons of the future. BEAUTYSPACE brings the very best in beauty to Hudson's Bay. Within our carefully crafted assortment, you will find an edit of the most innovative and sought-after skincare, haircare, makeup and lifestyle products from around the world.