Phaseollin is a naturally occurring phytoalexin with significant antifungal properties. It plays a key role in plant defense mechanisms, particularly in legumes such as beans, where it accumulates in response to pathogen attack or environmental stress. Due to its antimicrobial activity, phaseollin has been studied for its potential in agricultural applications, especially in developing disease-resistant crop varieties. Its ability to inhibit the growth of fungi like Botrytis cinerea and Fusarium species makes it a candidate for natural fungicide development. Additionally, phaseollin exhibits anti-inflammatory and antioxidant effects, prompting research into its use in pharmaceuticals, particularly for skin protection and wound healing formulations. Its bioactivity also supports interest in nutraceuticals and natural product-based therapies.