Hair care meets scientific flair at Living Proof, the cult line from the US that puts manes under the microscope. Co-founders and hairstylists Mitch DeRosa and Ward Stegerhoek enlisted a wide-ranging team of scientists to forge never-before-seen solutions for frizz, damage and dirt—without resorting to silicones and resins. The result? Visibly healthier hair that is easier to style and stays cleaner longer. Meet the miracle workers.