1, chemical burn: mainly depends on the corrosiveness of medicinal liquid to the skin, so that the skin with moles slowly dies and then falls off on its own. The principle of liquid nitrogen is the same. Put nitrogen on the mole and let the diseased skin die. Compared with others, the treatment price is very cheap, but it can't show the effect immediately, and the recovery time is very long, and the wound healing takes a long time. This method is difficult to grasp the depth of mole removal, which will lead to unreasonable mole removal and will rebound after a period of time. It is suggested that patients should never use this method to remove moles, especially those with scars. It is recommended to go to a professional plastic surgery hospital for in-depth communication.

2. Freezing method: freeze with liquid nitrogen, so that the tissue of pigmented nevus is frozen at high speed, so that the cells around pigmented nevus form water sores, and then fall off by themselves.

Disadvantages: large and thick moles can only be taken out after repeated freezing, and special instruments must be equipped, and the doctor's skills are also very important. Because depth control is not easy, it often causes injuries, so now dermatology does not need to treat moles.

Indications: Flat nevus with a diameter of 0.3-0.5 cm, including freckles.

3, laser gasification: mainly because the laser can generate huge energy, the pigment in the mole will be vaporized and dissolved, crushed into powder, and then wiped with a cotton swab, and the mole will fall off. It's easy to get rid of moles in this way, and it works quickly. After gasification, the mole will be wiped off with a special cotton swab, and the manual control is particularly strong. You need to know the depth of mole removal very accurately, and then see if there are any moles left. Usually, many moles will not leave any traces after laser removal, unless the moles are particularly large, which will leave a small pit, but it is almost invisible to the naked eye. However, there may be a rebound, so laser mole removal should be done several times.