Bakuchiol is a natural meroterpene phenol compound extracted from the seeds of Psoralea corylifolia L. (Fabaceae family). Known as the "plant-based retinol" and a "gentle alternative to retinol," bakuchiol has gained remarkable attention in the global cosmetics industry for its outstanding anti-aging, skin-lightening, anti-inflammatory, and anti-acne properties—all delivered with superior skin tolerance and photostability. This comprehensive article explores bakuchiol's botanical profile, active chemistry, efficacy mechanisms, market applications, and future potential.