Shades EQ Bonder Inside is Redken's first all-in-one acidic demi-permanent toner + bonder that tones and helps to strengthen sensitized hair in a single step. Formulated with built-in bonder technology, it’s specially designed to help strengthen the hair’s bonds to help repair and protect the most damaged strands following any lightening service. When used with the Flash Lift Bonder Inside and Acidic Bonding Concentrate, you can experience up to 77% less breakage. The exclusive formula also features Citric Acid and Taurine to help reduce damage and alkalinity, while balancing the hair’s porosity and PH levels to ensure optimal colour results with incredible shine and condition. It’s the Shades EQ Gloss results you know and love with added strength!