Yet, I’ve already noticed an improvement in the shadows that lurk under my eyes — their surface area has diminished remarkably and even with the weightless feel of the serum, my under-eyes ...

It also plays nicely with my other products and doesn’t pill under sunscreen and makeup. But what really propels this eye serum to MVP status in my routine is how it works to treat my dark circles.

“I started using the Caffeine facial serum under my eyes morning and night. It has improved my dark purple under-eye circles that I have lived with since childhood,” wrote one shopper. “I’m 65+ and ...