Enhanced Skin Permeation and Pigmentation Reduction Effects of a Novel Tranexamic Acid-Mandelic Acid Ion-Pairing Complex. - Jeon H; Park N; Won JG; Shin YW; Choi J; Min K; Choi E; Kim CK; Park SW; Son NS (Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI), 2025)