It usually takes 1 to 2 months for the melanin of picosecond laser to fade away, but the specific situation varies from person to person. Doing picosecond laser spot removal will cause slight damage to the local skin, therefore, it is easy to cause local melanin deposition after just doing it, but most of the melanin color is not very deep, with the metabolism of the skin will gradually fade, and in most cases, it will fade in 1 to 2 months. But there are some people who have faster skin metabolism, melanin fading will be earlier, and there are some people who do not pay attention to local care and sunscreen after skin laser spot removal, for example, often ultraviolet radiation, not only will not lead to melanin fading, there may be the formation of permanent melanin deposits. After doing picosecond laser spot removal, you must pay attention to local skin care, go out and do sun protection measures to avoid long-term exposure to ultraviolet rays.