Tranexamic Acid Concentration for Sun-Induced Hyperpigmentation

Regarding the use of Tranexamic Acid for skin darkening caused by sun exposure, it is true that this ingredient is effective for brightening the skin and reducing pigmentation.

Concerning the concentration, according to regulations in many regions, including ASEAN, the use of Tranexamic Acid in cosmetic products for skin brightening is typically limited to 3%. Concentrations higher than this, such as 5%, are often classified for medicinal use, particularly for treating conditions like melasma.

Using concentrations higher than 3% can increase the risk of skin irritation. Therefore, starting with a 3% concentration, as previously suggested, is a safer approach. This allows you to assess your skin's tolerance to the ingredient before considering whether to gradually increase the concentration, even for personal use. Always monitor your skin closely for any signs of redness, itching, or other irritation.

For addressing sun-induced hyperpigmentation specifically, a 3% concentration of Tranexamic Acid is generally considered effective and is a good starting point for safety.