Psoralen, also known as psoralen lactone, is an active ingredient extracted from the plant psoralen, which belongs to furanocoumarins.It has the effect of promoting the increase of skin melanin, and is clinically used for the treatment of vitiligo, alopecia areata, and psoriasis.
Psoralea corylifolia has the functions of warming the kidney and strengthening yang, absorbing qi and relieving diarrhea. Traditional Chinese medicine is used to treat impotence, emission, enuresis, frequent urination, cold pain in the waist and knees, asthma due to kidney deficiency, diarrhea during the night of midnight and so on.