Bond Builder is the first multi-benefit bond builder that protects the keratin structure for stronger hair, while also protecting against heat and delivering instant softness and shine. The Bond Builder is perfect for fragile, chemically or color treated hair thanks to its pre- and pro-bonding technologies. This is your new go-to for repairing existing damage, as well protecting from future damage: 

• Inside the hair , an active bond-building formula repairs broken disulfide bonds and protects the keratin structure to restore strength, elasticity, and resilience. 
• On the surface , a protective neo-cuticle forms a biomimetic shield that instantly smooths, softens, and defends against future damage. 
• The result is instantly healthier-feeling hair with improved softness, shine, and manageability with 73% less breakage. 

Lightweight and non-greasy with built-in heat protection up to 230°C / 450°F, Bond Builder can be used on damp hair for deeper repair, and as a finishing touch on dry hair to smooth lengths and provide an additional protective barrier against external damage. Bond Builder has a fresh, green and floral scent with notes of water lily, green apple and pineapple leaves.