Bis-Aminopropyl Diglycol Dimaleate

Bis-Aminopropyl Diglycol Dimaleate is a synthetic small molecule developed and patented by Olaplex, forming the active core of their bond-building hair care technology. It works by cross-linking broken disulfide bonds within the hair's cortex, reconnecting cleaved keratin chains that are damaged by chemical treatments, heat, or mechanical stress. Formulators choose it specifically for its ability to provide structural repair at the molecular level rather than simply coating the hair shaft, making it a true restorative active rather than a conditioning agent.