Li JJ, et al. - The scientists explored the potential hair regrowth effects of Perilla frutescens, which was selected due to its putative hair regrowth activity, in this research work. Their investigations revealed that rosmarinic acid (RA) was the active compound in P. frutescens that triggers hair growth. Thus, it could be a potential therapeutic agent for the promotion of hair growth and prevention of androgenetic alopecia (AGA).