Olaplex No.0 Intensive Bond Building Hair Treatment is a professional-inspired liquid treatment that acts as an intensive primer for deeply damaged hair. Powered by Olaplex's patented Bis-Aminopropyl Diglycol Dimaleate bond-building technology, it absorbs quickly into the hair shaft to repair broken disulfide bonds caused by chemical processing, heat styling, and mechanical damage. Designed to be used as a two-part system with Olaplex No.3 Hair Perfector, it dramatically strengthens hair structure, protects strand integrity, and restores natural resilience and softness.

* Features Olaplex's patented bond-building technology to repair severely compromised disulfide bonds * Acts as an intensive liquid primer that deeply saturates hair to prepare it for maximum bond restoration * Proven to yield 68% more repair and make hair 3 times stronger when paired with Olaplex No.3 * Rebuilds hair strength from within, reducing breakage and visible split ends * Free of sulfates, parabens, phthalates, and phosphates; safe for color-treated and chemically processed hair