Whitening and freckle removal is a very important research field in cosmetics. Tranexamic acid is an artificially synthesized Amino Acid with hemostatic and anti-inflammatory pharmacological effects, initially used as a clotting agent. With its widespread application, people have begun to realize that it also has whitening effects, so in recent years, people have also introduced it into the fields of Cosmetics & Personal care. Traditional Whitening Agent basically reduce the production of melanin by inhibiting the activity of tyrosinase in melanosomes. When used alone, they can only partially cut off melanin, but cannot completely block the generation and accumulation of melanin. Tranexamic acid is a new and efficient whitening agent that can remove melanin and reduce pigment deposition. It is a protease inhibitor that can inhibit the catalytic effect of proteases on peptide bond hydrolysis, thereby blocking the activity of inflammatory proteases and other enzymes. It can also prevent the dysfunction of epidermal cells in the black patches, inhibit the melanin enhancing factor group, and completely cut off the process of melanin formation through ultraviolet radiation. Black spots no longer thicken, expand, or increase, thus effectively preventing and improving skin pigmentation.