The hair fiber is made up of both “strong” and “weak bonds. When hair is coloured, bleached, and damaged it can become weak and fragile. EverPure’s Strong Core Science is a system of Bond Strengthening Shampoo and Conditioner that helps repair the strength of “weak bonds” in just 6 uses. Our system gently cleanses and helps strengthen hair inside & out, leaving hair soft & smooth, while protected from future damage.