An Exclusive Brush and Formula Technology. Inspired by haircare conditioners, the formula with Vitamin C & Fruit AHAs leaves every lash so smooth they don’t catch or stick together. Clump-free volume lash by lash by lash. The new One By One delivers volume like never before; bold without the bulk for a brand new look! Discover Maybelline\'s exclusive big, new volume! Big, bold, flirty lashes are here without the bulk!