By colour & treatment · Sub-chapter 09
How bond builders work.
Bond builders repair broken disulfide bonds inside the hair cortex — they don't just condition. Understanding the chemistry changes how you use them. Olaplex, K18, timing, and the at-home routine. Below is the full library.
Edited by Nelly · Beauty & Style Director
About bond builder
Olaplex, K18, and bond-building chemistry — the most significant development in colour care in a decade. How they work, when to use them, and how to compare the brands. Edited by Nelly.