Dark undereye circles dragging you down? Yeah, we can relate. Those pesky shadows can be one of the hardest concealer tricks to master — too much makeup, and you can end up looking cake-y and unnatural; too little, and your makeup won't bounce enough light to truly brighten up your eyes. Enter our latest episode of Beauty Prep School. Tune in for our best-ever luminizing secrets and learn how to cover up your undereye circles for good!