Bakuchiol (BAK) is a phenolic meroterpene compound extracted from the fruits and seeds of Psoralea corylifolia. It can also be found in other plants and flowers from the Leguminosae plant family.

Bakuchiol has been used as a reference standard to detect its existence in Psoralea corylifolia L. (PC) using ultra-performance liquid chromatography.

Bakuchiol (BAK) has various pharmacological effects such as antioxidant, antiaging, anti-inflammatory, anti-bacterial, anti-diabetic, cardioprotective, and estrogen-like effects. It is known to have similar efficacy but to be better-tolerated than retinol in improving photoaging. Bakuchiol displays antimicrobial activity against oral microorganisms such as Streptococcus mutans. It is also a DNA polymerase inhibitor and showed anti-tumor activity in human lung adenocarcinoma A549 cells. Bakuchiol has displayed hepatoprotective activity against rat liver damage in both in vitro and in vivo.