Commonly used spot removing ointments include hydroquinone ointment, vitamin A acid ointment, arbutin and so on. 1. Hydroquinone ointment: it is a skin discoloring agent, mainly by inhibiting the enzymatic oxidation of tyrosine into 3,4-dihydroxyphenylalanine and inhibiting other melanocyte metabolism processes to produce skin discoloration, applicable to chloasma, freckles and post-inflammatory hyperpigmentation spots. After using the medicine, it may produce burning sensation and other discomforts. It is forbidden for those who are allergic to this product, children under 12 years old and pregnant women. 2. Vitamin A acid ointment: Vitamin A acid can affect melanin production in melanocytes, thus reducing melanin formation and skin pigmentation. Burning sensation, erythema, flaking and other side effects may occur after use, and women of childbearing age should pay attention to contraception after use. 3. Arbutin: Arbutin can lighten pigmentation. However, it is generally an in-hospital preparation, and attention should be paid to its use under the guidance of our doctors. If you want to use spot removing drugs, you must first go to the dermatology department for consultation to see what nature of spots, and then decide what drugs to use.