It should be caused by factors such as poor cleaning, ultraviolet radiation and bad living habits. The back of the neck is a part that we often ignore. Usually, we should pay more attention to cleaning, especially paying attention to sun protection, exfoliating regularly, forming good living habits, going to bed early and getting up early, and exercising properly. These are all methods that can reduce the pigmentation of the neck, but the effective period is long. If you want to remove melanin quickly, you need to use professional products to remove melanin and restore your pink and tender skin.