Tranexamic acid is useful in the treatment of melasma, but it is recommended to use the medication under the supervision of a doctor. Melasma is a common skin pigmentation spot on the face, which is mostly related to factors such as heredity, ultraviolet radiation and changes in sex hormone levels. The effectiveness of tranexamic acid in lightening melasma has been clinically verified. For patients who are willing to improve melasma, tranexamic acid can be used as prescribed by the doctor to improve melasma by inhibiting cytokine stimulation of melanocytes to reduce pigment formation. Tranexamic acid for melasma is currently available orally and as a topical tranexamic acid patch. Because tranexamic acid has but not limited to the following contraindications: patients with thrombosis (cerebral thrombosis, myocardial infarction, thrombophlebitis, etc.) and those who may cause thrombosis, consumptive coagulation disorders, postoperative bedridden state and those who are undergoing compression hemostasis, renal insufficiency, etc., the oral use of the drug should be under the guidance of a specialist. Another part of the population may experience adverse reactions such as intracerebral thrombosis and bleeding, diarrhea, nausea, etc. after using tranexamic acid. It should be noted that it should be contraindicated in people who are using thrombin and those who are allergic to any of the ingredients in the product. If you need to use tranexamic acid to treat melasma, it is recommended to go to a regular hospital to consult a specialist and use the drug strictly under the guidance of a doctor to avoid serious adverse consequences.