Brighten the undereye area with the Rare Beauty Under Eye Brightener, a makeup formula that works to hydrate and awaken the under-eyes. Brighten the undereye area with the Rare Beauty Under Eye Brightener, a makeup formula that works to hydrate and awaken the under-eyes. It provides sheer to medium buildable coverage for a fresh, radiant look. Featuring a metal cool-tip applicator, this lightweight liquid formula can be applied by gently gliding the applicator across the undereye area before tapping to blend the product in seamlessly. This eye brightener can be applied to either bare skin or layered over concealer. Rare Beauty Under Eye Brightener is a vegan and cruelty-free makeup product that can also be used in place of a highlighter to add subtle brightness to the complexion.