Repair damaged hair and restore its strength with Redken's advanced "hair bonding treatment" solutions. If you're seeking a revolutionary "bond repair treatment," Redken offers a scientifically-driven approach to reinforce weakened hair bonds and balance hair pH. But "what is hair bonding" and why is it crucial? Hair's natural pH is slightly acidic (around 4.5 to 5.5), but many factors like coloring, bleaching, and even shampooing can disrupt this balance, leading to damage, breakage, and frizz. Redken's haircare, grounded in science since the 1960s, is designed to maintain optimal pH levels. From our Shades EQ Acidic Haircolor to the advanced Acidic Bonding Concentrate and Acidic Bonding Curls haircare, Redken's pH-balanced shampoos and slightly acidic conditioners work synergistically to keep hair in its healthy sweet spot. Explore our collections to discover targeted solutions for your specific hair type, whether it's damaged, dry, or color-treated. Take the Redken hair quiz to find the perfect bonding hair routine tailored to your needs, or save 10% when you bundle for a complete and scientifically-optimized haircare regimen.