If you’ve ever coloured, bleached, or heat-styled your hair, chances are you’ve heard about bond-building treatments. Brands like Olaplex and K18 have revolutionised hair repair with science-driven formulations — but how do they actually work?
Understanding Hair Bonds
Your hair is held together by three types of bonds: hydrogen bonds, salt bonds, and disulfide bonds. While hydrogen and salt bonds break temporarily with water and heat, disulfide bonds provide permanent structural strength. Chemical processes like colouring and bleaching break these crucial disulfide bonds, leading to weak, brittle, and damaged hair.
How Bond Builders Restore Damage
Bond-building products work by reconnecting broken disulfide bonds at the molecular level. Olaplex’s patented bis-aminopropyl diglycol dimaleate seeks out and repairs these broken bonds, while K18’s bioactive peptide works on the keratin chains themselves. The result is genuinely stronger, more resilient hair — not just a cosmetic fix.
When to Use Bond Treatments
For best results, incorporate a bond treatment into your routine once or twice per week. Apply to clean, damp hair and leave on for the recommended time. These treatments work best as part of a complete system — pairing a bond builder with a quality shampoo and conditioner from the same range maximises results.
Our Top Picks
Explore our curated selection of professional bond-building treatments from Olaplex, K18, and Redken — all authentic and shipped from within the EU.