Neck tanning is caused by melanin deposition due to ultraviolet radiation, and can be relieved by general treatment, medication, and laser treatment. Due to different personal constitution and symptoms, the effect is not the same, and there is no such thing as fast whitening. 1. General treatment: first of all, you need to get out of the environment of strong ultraviolet rays in a timely manner, minimize going out, if you have to go out, it is recommended to do a good job of sun protection, such as wearing sunscreen clothing and hats, applying sunscreen. 2. Medication: For the parts that have been tanned, you can use topical retinoic acid cream to promote the metabolism of the stratum corneum and help restore normal skin color. You can also use hydroquinone cream, arbutin and other drugs, which have the effect of inhibiting melanin. In addition joint oral vitamin C and other drugs, can also play a role. 3. Laser treatment: When the patient still can not become white through the above methods, you can use whitening laser method to get rid of it, but it needs several times of treatment to achieve satisfactory results. When the patient’s neck tanned, in order to quickly white back, you can go to the regular hospital, under the guidance of professional doctors for standardized treatment. Drugs need to be used in accordance with medical advice.