A course of treatment is one month. Bai Guyan is a Chinese patent medicine, which is mainly used to treat gynecological diseases such as irregular menstruation, dysmenorrhea and pelvic inflammatory disease. White pharmaceutical ingredients need a certain metabolic time, and a month's course of treatment can ensure that the pharmaceutical ingredients can fully play their roles in the body. Bai Gujing is a kind of health food, and its main components include freeze-dried sheep placenta extract, grape seed extract and salvia miltiorrhiza extract. It can eliminate chloasma, inhibit the formation of melanin by stimulating cell division and activation, and promote the discharge of melanin and aging cells, thus achieving the effect of fading spots.