Skinn Hylighten Dark Circle & Puffiness Treatment by Skinn Cosmetics. $29.99. Skinn Hylighten Dark Circle & Puffiness Treatment - 0.25oz Benefits: Haloxyl is an ingredient that helps to diminish the appearance of under-eye circles that can be caused by stress, fatigue, even genetics Hylighten is designed to reduce the coloring of dark circles, and to help support a firm, lifted and visibly tighter appearance of skin while helping to protect skin from exposure to pollution ...