This article is a part of CNN Underscored’s Guide to Age-Defying Beauty, a weeklong focus on the essential products, tips and tricks to enhance your glow at any age. We’ll be featuring editor-tested ...

All products featured on Allure are independently selected by Allure editors. However, when you buy something through our ...

Add Yahoo as a preferred source to see more of our stories on Google. Serums are the powerhouses behind any good skincare routine, as they can be adapted to fit any concern or need. Some promise to ...