Beauty This Brightening Eye Serum Sold Out in 3 Days — and My Before and After Photos Will Show You Why It’s back in stock now. By Tamim Alnuweiri Tamim Alnuweiri Instagram Twitter Website Tamim is beauty commerce writer at InStyle, with nearly a decade of experience writing about beauty, fashion, wellness, and music. InStyle's editorial guidelines Published on March 23, 2022 @ 06:00PM Pin Share Tweet Email We independently research, test, review, and recommend the best products—learn more about our process. If you buy something through our links, we may earn a commission. Photo: Courtesy/InStyle For the last few weeks, I have been going through it: I am dealing with the death of a family member, the sickness of another, and triggers of past-related trauma. I have clinical depression, but would consider myself currently having a flare-up, if you will. And disclosing all this is to explain that I have been sleeping poorly, crying, sad, stressed, and tired, which is making my genetic dark under-eye circles worse than ever. This week, Beautybio gifted me its Eyelighter Concentrate pen. I caught a glimpse of my puffy dark eyes in the reflection of my desk mirror and decided that out of all the products waiting for me to try I would choose this one. The Eyelighter Concentrate is a multifaceted tool: It a primes, depuffs, brightens, and smooths — a combination that resulted in it selling out in Sephora within just three days after launching in February. Courtesy Shop now: $58; ulta.com and sephora.com I pumped the serum through the metal applicator and went back and forth under my right eye and on the upper part of my lid. The metal applicator was cool-to-the-touch and instantly felt good on my puffy skin, but the real benefit took me by surprise. When I looked in the mirror for the second time, I was pleasantly surprised. I by no means looked like a healthy, vivacious human, but the darker brown color enveloping my eyes like a panda's was lightened and reduced to a shade more closely resembling my actual skin tone. My under-eyes also looked hydrated, even after my skin fully absorbed the serum. Beautybio's Eyelighter Concentrate is a clean product formulated with a combination of incredibly hydrating and commonly touted brightening ingredients: hyaluronic acid, squalane, retinol, and vitamin C. Courtesy Top: without Eyelighter Concentrate. Bottom: after using Eyelighter Concentrate. Even when I've liked an eye care product, I have never been enough of a believer to consistently use it. It's too early to say for sure, but I suspect this serum will change that as I've already begun using it twice a day in the short time I've had it. Grab Beautybio's Eyelighter Concentrate lest it should sell out — again.