Olaplex No.1 Bond Multiplier 17.75 oz

This professional-only repair treatment is the first step of the revolutionary Original Bond Building system offered as a single step so you can restock at your own pace. N°.1 is an easy add-in to any color, lighten, and chemical services to help prevent and repair damage as it happens. No need to change the formulas or measurements of your chemical services. Unlike built-in bonders, N°.1 seamlessly works at a molecular level in your chemical services to rebuild all three bonds, including disulfide bonds, for stronger, visibly healthier hair. Follow up with N°.2 (sold separately) after the service to reinforce repair.