The groundbreaking two-part Olaplex Professional System, No.1 Bond Multiplier and No.2 Bond Perfector, has the highest concentration of patented Olaplex Bond Building Technology. This proven, professional hair repair system trusted by stylists worldwide is now available to stylists in single-use dual packets. Olaplex No.1 Bond Multiplier contains a single active ingredient, Bis-Aminopropyl Diglycol Dimaleate, which is used as an additive to lessen damage during chemical processing. Olaplex works by finding single sulfur hydrogen bonds and cross linking them back together to form disulfide bonds before, during and after services. Disulfide bonds are broken via chemical, thermal, and mechanical processes. Olaplex No.2 Bond Perfector is the second step of the in-salon Olaplex system. It is a bond multiplier, not a conditioning treatment, and is necessary to repair any bonds that may have been damaged during the chemical process. Olaplex is the only product of its kind with 8 worldwide patents publishing soon. Olaplex is free of silicone, sulfates, phthalates, DEA, aldehydes, and is never tested on animals.