Olaplex No.3 Hair Perfector 100ml. A host of miraculous components that strengthen damaged bonds unite to create Olaplex No.3 Hair Perfector.. With a pH balance of 3.5-5, the weekly at-home treatment restores healthy shine and soft texture to dry, damaged hair with a bond-building patent known as ‘bis-aminopropyl diglycol dimaleate’. It works to realign broken disulphide bonds in the hair structure, reinforcing strands weakened by heat styling, frequent colouring, brushing and UV exposure.. Comb the hydrating Olaplex hair treatment through damp hair, allow it to work its magic for 10 minutes, then follow with your usual wash routine. Hair will feel strong, shiny and velvety-smooth.. Free of DEA, aldehydes and formaldehyde.