Sure, it may be pumpkin spice season to some, but others are still trying to cling to the last bit of summer. And the new Glow Recipe serum delivers that sunny, tropical goodness plus brightening and hydrating benefits to help bring your summer shine into fall and beyond.
The brand’s latest fruity offering, the Guava Vitamin C Dark Spot Serum, aims to lighten dark spots and dullness with a combination of antioxidants and tranexamic acid, a relatively new ingredient in over-the-counter products. But the guava serum doesn’t just contain one form of vitamin C (a notoriously unstable ingredient), it has five, including both water- and oil-soluble formulas. While vitamin C is a go-to ingredient for brightening skin, different forms work best for different types of skin and some are easier to keep stabilized than others, so this product is covering all its bases here.
Glow Recipe paired all that vitamin C (including some derived from guava-seed oil and guava-fruit extract) with antioxidants vitamin E and ferulic acid. That’s an all-star combination of ingredients often seen in much pricier products. Glow Recipe’s previous vitamin C serum, the Pineapple-C Bright Serum, contains exfoliating ingredients as well as the star antioxidant. In turn, the guava serum doubles down on gentle brightening ingredients.
The serum also contains 1.1% tranexamic acid, which has been studied extensively over the past several years in oral formulations in the treatment of hyperpigmentation, including melasma. There’s generally more evidence showing that tranexamic acid can help reduce melasma when taken orally than when used topically. But a growing body of evidence suggests that topical formulations could have some benefits too. With the addition of glycerin and hyaluronic acid, the formula will also help keep skin feeling hydrated and plump.
Glow Recipe’s new guava serum, with a light gel texture and bright pink color, absorbs into the skin easily. As of today, it’s available on the brand’s site and at Sephora.
The brightening skincare ingredient can tackle hyperpigmentation.
As far as brightening skincare ingredients go, vitamin C is an A-list star. However, there are other effective ingredients that can treat post-inflammatory hyperpigmentation from acne, sun damage, or melasma that deserve some time in the spotlight, too.
Tranexamic acid is one such ingredient having a moment, with more and more skincare influencers and beauty brands shining light on its benefits and including it in product formulas. While tranexamic acid can be effective on its own, it works even better as an ensemble with other dark spot-fighting ingredients such as vitamin C, kojic acid, niacinamide, and more.
What Is Tranexamic Acid?
“Tranexamic acid is a synthetic form of lysine, which is an amino acid needed to make proteins,” says Dr. Shari Marchbein, board-certified dermatologist in NYC. “It works by decreasing the production of melanin and we know that the oral form is much more effective at treating melasma than topical form. That being said, serums and other products that contain this ingredient have a lot of potential to help improve hyperpigmentation.”
The ingredient originally was used as a hemostatic agent to help blood clots, but recently has been utilized as a brightening ingredient to help minimize hyperpigmentation as well as melasma.
What Are the Benefits of Using Tranexamic Acid?
One of the major benefits of tranexamic acid is that it plays nice with other brightening ingredients, so you can really zero in on hyperpigmentation.
“There are many treatments for dark spots and these often work well together including licorice, niacinamide, kojic acid, tranexemic acid, retinoids, chemical exfoliants [such as glycolic acid, an alpha-hydroxy acid], and more,” Dr. Marchbein says. The dermatologist often recommends serums with tranexamic acid and other brightening agents be used in the same routine for the ingredients to work synergistically to improve post-inflammatory hyperpigmentation and melasma.
Tranexamic acid is also a safer, effective alternative to hydroquinone, a potentially irritating bleaching ingredient. “There aren’t many options when it comes to safe, effective skin lightening bioactives,” says Krupa Koestline, clean cosmetic chemist and founder of KKT Consultants. “Hydroquinone is banned in the EU and restricted in many countries due to its safety concerns. Tranexamic acid has shown promising evidence as a plasmin inhibitor and therefore an effective treatment for UV induced discoloration, dark spots, and redness.”
What Are the Side Effects of Tranexamic Acid?
All skin types can use tranexamic acid, but like adding any other new ingredient to your skincare routine, it’s best to do a patch test to ensure you won’t experience irritation.
It’s also important to wear SPF when using tranexamic acid, along with other brightening ingredients, because the sun can make hyperpigmentation darker.
“Remember that before you spend your money on antioxidant serums, brightening ingredients, and retinoids to improve the tone of your skin and hyperpigmentation, the most important and first step is diligent daily sun protection,” Dr. Marchbein says. “It is key to reduce the appearance of brown spots (otherwise you are literally throwing your money away).” The dermatologist recommends a broad-spectrum SPF 30 or higher should be applied to the face, neck, and ears every day — even in the winter.
How Do You Add Tranexamic Acid to Your Skincare Routine?
Dr. Marchbein says to use tranexamic acid once or twice a day. “I also layer tranexamic acid containing serums over Vitamin C serums and under SPF in the morning and under retinoids at nighttime, so this can safely and effectively be combined with multiple other actives.”
The active can be found in serums, moisturizers, and toners, so it’s entirely up to you what step of your routine in which you want to incorporate it.
That being said, Koestline says serums are a popular way to go. “Most people do like using actives in their serum layer since you’re applying it before other products.”
Shop Tranexamic Acid Skincare Products:
SkinCeuticals Discoloration Defense
Dr. Marchbein is a fan of this serum by SkinCeuticals, which she often recommends to patients treating post-inflammatory hyperpigmentation and melasma. It’s infused with tranexamic acid, along with kojic acid and niacinamide, another two tried-and-true brightening ingredients.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment
In addition to niacinamide, the all-star cast of Peter Thomas Roth’s discoloration treatment includes tranexmic and kojic acids, alpha arbutin, and pentapeptide. The lightweight cream can be applied twice a day on clean skin and is best followed by a moisturizer.
Puffiness? Dark circles? Dryness? Crow’s feet? This eye mask by celebrity facialist Joanna Vargas checks all the boxes. It’s powered by brightening tranexamic acid, collagen-boosting matrixyl, soothing allantoin, and hydrating licorice root extract.
If post-breakout dark spots, hyperpigmentation, or dullness are your main skincare concerns, try swapping your usual moisturizer for this overnight treatment. Powered by tranexamic acid, vitamin C, and acai berry extract, it targets areas of discoloration and boosts overall radiance.
Dr. Marchbein says SkinMedica’s Lytera 2.0 serum is another great option for treating discoloration. It combines tranexamic acid with niacinamide, phytic acid, phenylethyl resorcinol, and a marine extract blend to improve the appearance of hyperpigmentation without drying out skin.