Bis-Aminopropyl Diglycol Dimaleate
Bis-Aminopropyl Diglycol Dimaleate is a breakthrough hair-repairing ingredient used in professional salon treatments. Often referred to as the key active in bond-building products, it helps reconnect broken disulphide bonds inside the hair shaft that are damaged by colouring, bleaching, heat styling or chemical processing. It leaves hair stronger, smoother and more resilient without adding weight or coating the strands.
How it works in skincare
In cosmetics and skincare, Bis-Aminopropyl Diglycol Dimaleate works by forming new covalent bonds between keratin proteins within the hair fibre. During chemical treatments or thermal damage, the natural disulphide bonds in hair break; this molecule penetrates the cortex and creates stable linkages that rebuild the internal structure. It is typically used in leave-in or rinse-out hair masks and professional salon systems rather than daily skincare, delivering noticeable improvements in elasticity and shine while protecting against further breakage.
Key benefits
- Repairs broken disulphide bonds in damaged hair
- Improves hair strength and elasticity
- Reduces breakage from colouring and bleaching
- Enhances smoothness and manageability
- Helps restore natural hair texture after chemical processing
- Protects hair from future heat and chemical damage
Best for
chemically treated hair, damaged hair, colour-treated hair, heat-damaged hair, fine or brittle hair
Where it comes from
Bis-Aminopropyl Diglycol Dimaleate is a synthetic molecule developed in a laboratory specifically for cosmetic use. It is not derived from any plant, mineral or natural source.