Editor-Vetted: 12 Best Brightening Serums for Fading (and Preventing) Hyperpigmentation

Why we love it: Who doesn’t love a twofer? This serum has a two-pronged approach to tackle dark spots and discoloration: b.r.y.t.e.r. biotechnology, which spotlights brightening ingredients and AHAs to resurface skin, and patented TAP biotechnology that combats internal free radicals to prevent uneven skin tone and dark patches caused by oxidative stress. The brand says you can expect brighter, more even skin after eight weeks of use—and our editor testers agree.

Cosmo editor review: “I deal with both melasma and post-inflammatory hyperpigmentation from old breakouts (lucky me!) and this brightening serum is the most effective I’ve tried for fading both. It’s powerful but non-sensitizing, and I love that it has AHAs to gently smooth my skin too.” —LAUREN BALSAMO, BEAUTY DIRECTOR

Why we love it: “Great for dark spots, this serum contains Malassezin, which is a powerful antioxidant that targets pigmentation, as well as niacinamide and alpine rose extract to help even skin tone,” Dr. Garshick says. “It can be used twice daily, morning and night, and layers easily under moisturizer.”

Cosmo editor review: “Hyperpigmentation has been a major issue for me forever, including a stubborn spot that wouldn’t budge for years. This serum was the first to successfully fade it—I wish I had taken before and after pictures because the results were pretty dramatic for a serum that is still gentle on my sensitive skin. It definitely brightened up the rest of my complexion too.” —CELIA SHATZMAN, CONTRIBUTING BEAUTY WRITER

Why we love it: I’ve been haunted by the scars of past pimples and they are scary. There’s nothing more frustrating than when the post-acne marks actually last (way) longer than the zit. Luckily, this little guy is designed to brighten those areas, along with dark spots and hyperpigmentation, courtesy of tranexamic acid, alpha-arbutin, and niacinamide. The milky serum is gentle enough for daily use without irritating the skin, though patience is key, as it takes at least four to six weeks to see results.

Cosmo editor review: “It's commonplace for a brightening serum to be drying. It's filled with a whole bunch of actives, you know? But this milky version from Banu feels like a hybrid formula that also moisturizes my skin. I use it in the morning and love the texture so much, specifically for how easily it absorbs into my skin but leaves me with a glow. I always top with moisturizer, but I don't even really have to on my combo skin."” —BETH GILLETTE, BEAUTY EDITOR

Why we love it: Vitamin C can be notoriously irritating for those with sensitive skin, but this serum features 12-hour time-release technology developed in Japan to go easy on skin while fighting hyperpigmentation and post-acne marks. The formula also includes ferulic acid, and the dream team brightens and firms skin in as little as one week.

Cosmo editor review: “One of my favorite vitamin C serums, I was impressed with the gentle brightening effects of this potent formula. Sometimes vitamin C can irritate my sensitive skin, but this one did no such thing thanks to its slow-release enzymatic technology. I also appreciate that it supports elasticity to firm, making it an anti-aging superstar.” —CS

Why we love it: Dark spots are a major sign of skin damage, and this vitamin C serum helps slow them down, along with other tell-tale indications. There’s 15% of the hero ingredient, along with bearberry, licorice, and kojic acid, to minimize the appearance of sun damage and acne scars. To treat and prevent future breakouts, it’s also infused with anti-inflammatory ingredients turmeric and salicylic acid.

Cosmo editor review: “I deal with so much stubborn hyperpigmentation, and this serum has done wonders to fade it. It melts into my skin like butter and layers perfectly under my SPF and makeup. It’s the type of product that will have you saying ‘wow’ when you catch yourself in the mirror.” —JULEE WILSON, BEAUTY EDITOR-AT-LARGE

Why we love it: Practically a vitamin C serum on steroids, whether your spots are from sun damage, hyperpigmentation, post acne, or aging, this is clinically proven to help brighten them. Powered by a 15% vitamin C complex with stabilized L-ascorbic acid, liposomal 3-O-ethyl ascorbic acid, and THD, it also has an advanced antioxidant cocktail with tranexamic acid, ferulic acid, and alpha-arbutin to help pause environmental damage and signs of aging. A growth factor and patented peptides pitch in on tackling dark spots, too.

Cosmo editor review: “I can personally attest to the impressive brightening powers of this serum sans any irritation or redness. My overall complexion looked more even and less dull, even when I slathered this on during colder months when my skin is typically listless. I also appreciate that this serum targets spots at every stage, to help fade existing ones and prevent new ones from forming.” —CS

Why we love it: As if hyperpigmentation isn’t annoying enough to deal with, it’s often accompanied by redness—but this serum helps with both, including dark spots, age spots, and brown patches. The hero here is proprietary PATH-3 Technology that works to reduce surface pigmentation and prevent future damage. Potent antioxidants help boost skin health too.

Cosmo editor review: “Melasma and redness often go hand-in-hand, so I love that this brightening serum can address both. It’s excellent and fading and preventing discoloration for an even-toned glow, and really helps calm down the inflammation on my cheeks and chin.” —LB

Why we love it: In just two weeks, you can expect to see minimized dark spots and smoother skin, thanks to brightener thiamidol and hydration hero hyaluronic acid, respectively. The lightweight formula works for all skin types, including sensitive ones, and won’t clog pores.

Cosmo expert review: “Formulated with thiamidol, this serum visibly reduces persistent dark spots while hyaluronic acid helps to boost moisture, helping to brighten the skin while also smoothing the appearance of fine lines and keeping the skin hydrated. It is gentle on the skin and easy to tolerate.” —Dr. Garshick

Why we love it: Defy gravity with this serum that not only brightens but also firms. Developed by Beverly Hills dermatologist Dr. Harold Lancer, this serum gets to work on a cellular level on dark spots, uneven skin tone, and discoloration courtesy of alpha arbutin and nonapeptide 1. It also contains exosomes to smooth skin texture and Gravityl to lift sagging skin.

Cosmo editor review: “Post-inflammatory hyperpigmentation from old breakouts is such a pain to treat, but this serum has been excellent at fading it. The creamy formula brightens and evens out my skin tone without being the slightest bit irritating.” —LB

Why we love it: One of the most expert recommended brightening serums of all time, this OG has rightfully earned its fan club. Essentially the gold standard of vitamin C serums, it also contains vitamin E and ferulic acid to provide antioxidant protection from environmental stressors and dullness. It also improves signs of photodamage and aging to minimize the appearance of fine lines and wrinkles.

Cosmo editor review: “I’ve lost track of how many people I’ve recommended this glow-getter to. A true skincare classic, it’s been a staple of mine for nearly as long as I’ve been a beauty editor. Nothing brightens quite like it and over the years I’ve come to appreciate its anti-aging excellence even more.” —CS

Why we love it: Not your average vitamin C serum, this one is spiked with phytic acid to make the brightening ingredient’s antioxidants even more stable and potent. The airless pump and opaque glass packaging also work to prevent the famously fickle ingredient from oxidizing. The serum fights signs of aging by firming and smoothing while reducing dark spots and strengthening the skin’s barrier. The hyaluronic acid complex keeps skin hydrated and happy.

Cosmo editor review: “So many vitamin C serums are effective but feel gross on skin, but this one feels amazing while being excellent at brightening skin tone, too. I love how quickly it dries down with no sticky or greasy residue—plus, the smell is really pleasant.” —DANIELLE COLIN-THOME

Why we love it: Quite the multitasker, this serum checks off a few boxes, all while relying on natural ingredients. First, it taps Detoxophane sourced from garden cress to minimize the appearance of skin discoloration and prevent new spots from forming. It also contains organic torch lily extract and ceramide to hydrate, strengthen the skin barrier, and reduce the appearance of fine lines and wrinkles.

Cosmo expert review: “This helps to improve the appearance of uneven skin tone and dullness while supporting the skin barrier, combining Detoxaphane and ceramides. It is gentle on the skin and easy to tolerate.” —Dr. Garshick