Ferulic acid yog dav nyob rau hauv tej yam ntuj tso nroj tsuag, nrog cov tshuaj lub npe 4-hydroxy-methoxycinnamic acid.Nws muaj nyob rau hauv ntau yam tshuaj suav tshuaj xws li Angelica sinensis, Ligusticum chuanxiong, Equisetum, thiab Cimicifuga nyob rau hauv cov nroj tsuag.Ferulic acid muaj ib tug dav spectrum ntawm Antioxidant zog, tuaj yeem cuam tshuam cov kev ua ntawm melanocytes thiab tyrosinase, thiab muaj kev tiv thaiv wrinkle, anti-aging, whitening, anti-inflammatory thiab lwm yam teebmeem.