Laser speckle removal is one of the most commonly used methods. Its principle is that laser instruments produce high-intensity beams, and different types of lasers can produce different colors of light. The naked eye color of laser is the key to treatment. Different colors of laser are absorbed by different colors of skin, and dye particles are decomposed and vaporized by laser energy, sealing blood vessels, and then the dye particles are absorbed by the body and excreted, and the pigment disappears.