There are good medicines for removing brown spots

  Although the melanin on the skin can help us shield some of the sun’s ultraviolet rays, long-term exposure to the sun can still cause brown or pink scaly spots on the skin. They are also called “sun spots”.
  The sun spots are at risk of developing into skin cancer, so they should not be taken lightly. In the past, the common way to remove sun spots was freezing with liquid nitrogen, but the treatment was accompanied by skin burning and only one or two spots could be treated at a time. Recently, a Finnish scientist has developed a cream that provides a more effective way to treat sun spots.
  This cream contains a chemical called “aminolevulinic acid”. When aminolevulinic acid is applied to the skin, it is absorbed by the sun spots and forms a chemical substance called “protoporphyrin IX”. During treatment, people must sit in the sun and let the cream stay on the skin for 2 hours. During this period, sunlight will trigger protoporphyrin IX to release active oxygen, which will kill the cells that form sun spots.
  This kind of cream is usually used once, the effect is very fast, 80% of the sun spots can be removed. In the first few days you may look badly sunburned. After applying the cream, your skin begins to scab, which will fall off within a week and your skin will become smooth again.
  Another cream containing “fluorouracil” is also very effective for removing large areas of sun spots, and it is relatively cheap, but it must be used continuously for 4 weeks, and it may feel very itchy during use.