Tranexamic Acid Side Effects
In general, the ingredient is safe, says Dr. Meder. “Tranexamic acid is a safe and effective treatment that acts differently compared with acids of hydroquinone treatments,” which is known to be in many skin-lightening products. Dr. Ria notes that “there are studies showing the effect of tranexamic acid on reducing skin pigmentation, [however] this has not yet been verified in any major trials yet, which is why lots of people continue to question how effective it is as a treatment.” Dr. Meder also warns that although tranexamic acid is effective for treating melasma, it won’t work on freckles or age spots. Products containing tranexamic acid are very popular for treatment after an IPL or laser treatment. “This is especially true in sunny states because it keeps the UV sensitivity of the skin under control,” she said.
How to Use Tranexamic Acid For Skin
Though you can technically use tranexamic acid any time of day, doctors recommend incorporating it into your nighttime skin-care routine. It should come after you cleanse your skin and before you apply moisturizer, similar to your other serums. Though it mixes well with other ingredients for brightening, like vitamin C, you should exercise caution when using it in combination with other skin-care acids.
— Additional reporting by Jessica Harrington