A synthetic amino acid that functions as a skin-conditioning agent and astringent. Research has shown that amounts of 3% can work as well as gold standard skin-lightening ingredient hydroquinone for discolorations; however, hydroquinone has considerably more research attesting to its effectiveness. Other research has looked at skin improvements from tranexamic acid via administration by microneedling.
See amino acid, hydroquinone
References for this information:
Journal of Research in Medical Sciences, August 2014, pages 753-757
Journal of Cutaneous and Aesthetic Surgery, July-August 2013, pages 139-143