Why Tranexamic Acid Is Skincare's Trendiest Ingredient

In the world of skincare, it seems as if every other day there's a new buzzy ingredient that promises to give you newborn-level collagen or smoothness that rivals a freshly Botoxed complexion. However, every now and then the praise is warranted. Case in point: tranexamic acid.

The ingredient is known for its powerful brightening properties that are comparable to those of vitamin C and kakadu plum. Specifically, it's celebrated for its ability to even out stubborn discoloration. It's now incredibly popular amongst those living with melasma, acne scars, hyperpigmentation, or red, splotchy complexions. With continued use, the intensity of such discoloration lessens, and overall brightness improves.

Considering the overwhelming amount of information flooding through SkinTok, we decided to simplify everything there is to know about tranexamic acid by turning to the professionals. Below, we spoke to two dermatologists and a cosmetic chemist to learn about this skincare ingredient. For more information on its benefits and potential side effects to how to use tranexamic acid for skin, keep scrolling.

What Is Tranexamic Acid?

Unlike most acids, tranexamic acid doesn't fall under the umbrella of an alpha or beta hydroxy acid. Instead, it's derived from an amino acid and "helps to reduce the look of hyperpigmentation," explains cosmetic chemist, Ron Robinson. In other words, it can help lighten dark spots.

A synthetic derivative of the amino acid lysine, tranexamic acid is described by the skincare wizzes at SkinCeuticals as "a powerful ingredient recognized for its ability to brighten skin complexion and improve the appearance of discoloration." Several notable skincare brands, including SkinCeuticals, Joanna Vargas, Shiseido, and SkinMedica, have infused it into some of their game-changing formulas.

Benefits

When used topically or taken orally, tranexamic acid is known to have brightening and lightening benefits due to its ability to stop irregular melanin production. Tranexamic acid pairs beautifully with other brightening and skin-repairing saviors like vitamin C and your favorite SPF, which will help prevent damage and ensuing discoloration from the get-go.

The ingredient is on the World Health Organization's (WHO) List of Essential Medicines because it has historically been used to treat or stop excessive loss of blood in various situations including major trauma and surgery. In 1979, however, a medical professional accidentally discovered the skin benefits of tranexamic acid, when a patient of his taking the medication for chronic urticaria also experienced lightening of skin discoloration.

Potential Side Effects

Although tranexamic acid is probably safe for most skin types, it's always important to consult with a dermatologist before incorporating a new ingredient and product into your skincare routine. Some reported side effects of using tranexamic acid-containing products include irritation, dryness, and flaky skin. While tranexamic acid "is compatible with many other skincare ingredients," Robinson cautions that "it can be irritating to those with very sensitive skin."

Gary Goldenberg suggests adding possibly irritating ingredients, like acids, one at a time. Starting too many new products at once can do more harm than good, overwhelming your skin and causing redness or flakiness.

How to Use Tranexamic Acid

Since tranexamic acid is fairly gentle on its own, you can combine it with other skincare ingredients to maximize the benefits. You just don't want to overdo it by using too many acids at once. "I like combining this with a retinol and a chemical peel. It's a good adjunct to treating melasma, but it's not enough on its own," dermatologist, Kristina Goldenberg, MD, says. Combining it with vitamin C or kojic acid maximizes its brightening power, ensuring you get the most out of the ingredient.

The best way to apply tranexamic acid? "I love using acids in a serum," she says. "The best vehicle is the one that's formulated by a good manufacturer." Essentially, whatever your skin most agrees with is best. Just remember to always follow up with a moisturizer and SPF.

The Best Skincare Products With Tranexamic Acid

Because it's a good brightener, it's smart to use an eye cream or mask with tranexamic acid. We love the Joanna Vargas Bright Eye Hydrating Mask. With tranexamic acid as one of its starring ingredients, it works well to resurrect lifeless, shadowy under-eyes. The ingredient roster also boasts peptides that may help plump skin and a licorice root derivative to combat inflammation.

In terms of serums, our favorites include Peach Slices Super Fade Discoloration Serum ($12), Knesko Skin's Diamond Radiance Serum ($225), and SkinCeuticals Discoloration Defense ($110), which all tap other brighteners such as niacinamide or kojic acid to tackle discoloration.

Meant to combat dullness and uneven texture, this Murad peel utilizes tranexamic acid along with an AHA blend. The combination of the two acids helps to improve skin clarity over time. The Eadem Cashmere Peel Gentle Exfoliating AHA + PHA Toner ($42). This intensive formula employs a 9% blend of Lactic, Azelaic, and Tranexamic acids.