It features the same patented, Yves Saint Laurent Touche Eclat brightening technology you love, but is now geared specifically toward reducing undereye circles. The concealer targets both hereditary undereye darkness as well as darkness caused by fatigue, actually reflecting light away from the eyes to diffuse and correct dark shadows. The built-in brush applicator is perfect for applying and blending in the small eye area, too. The entire eye instantly looks awake and bright. No caking and no heaviness, either. To illuminate, apply to the upper area of your cheekbones and the top of your browbone. Create a three-dimensional effect by highlighting the bridge of your nose and adding a radiant touch to the middle of the forehead. Apply under the eyes and along the inner corner to remove eye-area shadows.