Shoppers are hooked on the results.
Each product we feature has been independently selected and reviewed by our editorial team. If you make a purchase using the links included, we may earn commission.
Kleem Organics’ Professional Age-Defying Vitamin C Serum
Credit: Courtesy Kleem Organics

When antiaging comes into the conversation, we all know what tends to get most of the attention: retinol. With due reason, too, as it might be the most potent over-the-counter option for staving off signs of aging. However the secret to youth also lies in another common skin-care ingredient that has only recently started raking in praise for its antiaging prowess. Vitamin C, as it turns out, is one heck of a powerhouse ingredient for healthier, younger-looking skin as well, and can yield effective results on its own and when paired with retinol in your routine. 

In the skincare game, vitamin C works as a potent antioxidant that can neutralize free radicals, which result from different types of skin stressors like sun exposure (that leads to UV damage), air pollution, and skin-cell damage that leads to premature aging. All the while, it does what many do know about the ingredient: brightens any dark spots or a dull complexion, smooths rough or bumpy skin texture, and increases cell regeneration for a plumper, healthier look overall. Basically, it protects you from all the bad stuff and does some major good stuff in the process. If you want glowing and younger-looking skin, most dermatologists will likely recommend it.

Some of the best recommendations you can find for vitamin C serums can be found on Amazon, particularly deep in the reviews of other popular products. We were deep into the five thousand reviews of one of Amazon’s best-selling retinol moisturizers when we discovered that dozens of shoppers noted that they were using the product alongside the brand’s vitamin C serum that they claimed, when paired with the retinol cream, was the secret to their age-reversing skin success. We’re talking review after review after review of similar sentiments that drove us to finally look up the serum for ourselves, and things immediately made sense. 

Kleem Organics’ Professional Age-Defying Vitamin C Serum
Credit: Amazon

Kleem Organics’ Professional Age-Defying Vitamin C Serum has over 8,000 reviews by its own right. It claims to increase firmness, smooth fine lines, diminish photo-damage, restore skin elasticity, and give brightness and vibrance back to skin; and reviewers are basically nutty for it. Many post photos showing real progress and general success with the product, specifically when paired with the brand’s retinol cream.

One shopper notes, “After using an entire bottle over the last month, morning and night, I'm a convert. Just ordered more. My skin is looking healthier and clearer—age discoloration has faded considerably and skin looks smoother. I'm usually very skeptical about product claims, but I'm happily surprised by these results.” She also notes that using the serum on the backs of your hands can visibly help reduce sun spots

So whether you’re a retinol fanatic or antiaging novice, a vitamin C serum can be a game-changer, and we’re betting on this affordable best-seller. (SHOP IT: $11;

WATCH: The Best Antiaging Creams and Serums for Aging Gracefully

For regular use, begin by applying each morning before adding a layer of sunscreen, as vitamin C can make you more sensitive to the sun. Work your way up from a few times a week to every morning, before adding it into your nighttime routine. According to reviews, you can expect to start seeing results in as little as three weeks. How’s that for age-reversing?