It is common for the skin to darken due to excessive sun exposure, and the need for skin whitening is understandable. In the field of medical beauty, there are several means to help whiten the skin: 1. **Laser treatment**: Lasers can target melanin and help reduce pigmentation, and are often used to improve uneven skin tone and sun spots. 2. **Photorejuvenation**: Also known as intense pulsed light (IPL) treatment, it can improve skin pigmentation and have the effect of brightening the skin. 3. **Chemical peels**: Improve skin tone by using chemical agents to remove aging cells in the epidermis and stimulate new cell growth. 4. **Whitening injections**: Injections containing glutathione or vitamin C can help with systemic whitening effects, but multiple treatments are required. 5. **Topical whitening products**: Some medical beauty products containing kojic acid, arbutin or vitamin C can be used under the guidance of a doctor to help lighten spots and brighten the skin. It should be noted that these treatments have their own advantages and disadvantages, and the effectiveness and safety vary from person to person. Before undergoing any medical aesthetic treatment, it is best to consult an experienced dermatologist or medical aesthetic professional to assess your skin condition and choose the most suitable treatment plan. In addition, pay attention to sun protection and use high SPF sunscreen to reduce further sun damage.