There are a lot of methods to brighten and remove spots, mainly the following. First, laser treatment, using the physical principle of carbon dioxide laser, a certain wavelength of laser can penetrate the epidermis, so that the melanin particles can be broken down quickly and then be swallowed by the phagocytes in the body and discharged from the body, so as to achieve the effect of removing spots. After the removal of spots, you must pay attention to sun protection, because the laser will leave certain pigmentation after the removal of spots. You should apply sunscreen before going out for half an hour every day, and you should wear a hat, a mask and an umbrella when you go out. Secondly, you can take oral medication, such as tosamax, which can expand blood vessels locally and increase blood circulation, so that the cell metabolism of local pigmentation can be enhanced to remove pigmentation.