The beauty industry has long promoted the idea of longevity. Whether through topical potions or ingestible supplements, there are seemingly endless options on the market today that promise noticeable hair growth, firmer skin, and improved collagen production later in life. As a beauty editor, I’m a bit skeptical of these claims. After all, which string of proteins or peptide chain can stall the hands of time? But after noticing my first signs of aging (slight crow’s-feet and etches below my eyes worsened by purple circles from an unstable sleep schedule, stress, and travel), I suddenly found myself paying these products a bit more attention.

The state of our skin is often one of the first indicators of age: Lines begin to streak across our complexions, under-eye volume slowly fades, and a dark haze settles below our orbs. While aging is inevitable, skincare can help slow the effects of time tremendously—especially when you factor in a clinically tested eye serum as potent as the one I’ve been using for the last 20 days.

You may recognize its name if you’ve walked along the walls of French department stores and premium beauty retailers, but its contents are entirely new. Meet the Clarins Double Serum Eye, an upgraded version of the “age-defying concentrate” that marries the latest findings from Clarins’s seven years of longevity research—hyperfocused on delicate under-eye skin—and the technology behind the brand’s beloved Double Serum. After picking up this product in the South of France and learning to implement it into my routine the French way (more on that later), my skin was undeniably transformed.

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What is the Clarins Double Serum Eye?

To say that the Clarins Double Serum Eye is new would be a false statement. The brand added the concentrated serum to its top-selling Double Serum family in 2021. But much like how the French beauty brand occasionally releases new versions of its iconic Double Serum as its hungry team of researchers discovers new ingredients and advancements, the same happens with the Double Serum Eye. The modern result is this hot-from-the-lab formula that addresses several hallmarks of aging at the cellular level; targets every millimeter of the eye contour, from frown lines to bags; and includes an underappreciated Mediterranean skincare ingredient that makes all the difference.

This new and improved serum features two different formulas nestled inside the golden bottle—a hydric solution and a soothing emulsion. The chambers are kept separate so the ingredients can perform at the highest level, working best together on the skin instead of being mixed inside the bottle. You can see the separation in each drop: a dash of white cream inside a splash of hydrating gel.

How It’s Different

The original Double Serum Eye boasted turmeric and organic wild chervil, an herb that visibly reduces signs of aging. Much like the new iteration, the packaging is largely made from recycled materials and includes a single-shot dispenser. However, the 2026 upgrade features a bevy of new ingredients that take this formula to the next level, including plant-based caffeine for puffiness, niacinamide for dark circles, and marjoram extract (the star of the show!) for epigenetic balance.

Clarins’s team of researchers knew that it needed to look backward in order to move forward in the fight for longevity. “We study ethnobotany—how different populations, like Chinese and African populations, used these plants decades and centuries ago,” Nathalie Issachar, the director of global research and development at Clarins, tells Who What Wear. After testing more than 908 plants in extensive research labs, marjoram was found to produce collagen fibers by way of wound-healing, which later proved to counteract the natural decrease in collagen production after one’s mid-20s.