Hair care is experiencing a major evolution, driven by consumer demand for solutions that repair and reinforce hair at the molecular level. Bond-building treatments, once confined to niche professional applications, are now increasingly incorporated across shampoos, conditioners, and treatments, reflecting a shift in expectations: molecular-level repair is no longer a premium add-on, but an anticipated benefit. 

Despite the proliferation of products claiming to “strengthen” or “repair” hair, truly effective bond-building technologies remain limited. The category was established in 2014 with Olaplex, whose dimaleate chemistry focused on protecting hair during chemical processes such as bleaching. It evolved further with K18, introducing a biomimetic keratin designed to repair hair after damage had occurred, marking a key advancement in the chemistries available for hair repair. Until recently, no ingredient supplier had delivered a comparable solution for formulators.

The launch of KeraBio™ K31 (Hydrolyzed sr-(Tripeptide-137 Hexapeptide-40 sh-Polypeptide-184 sh-Polypeptide-146)) represents a major step forward. Developed through advanced biotechnology, this biomimetic keratin peptide targets molecular-level damage by facilitating the recharge of hair’s intrinsic keratin, thereby enhancing strength and resilience. This article details the scientific rationale, production methodology, and performance data that position KeraBio K31 as a pivotal development in advanced hair repair and the rapidly expanding bond building market.