Picosecond refers to picosecond laser spot removal, picosecond laser when there is no blasting can only play a limited role in lightening the role of pigmentation, but the effect is not big and can not be completely remove spots. 1. Picosecond laser spot removal is the use of laser emission pulses to the level of picoseconds, with the improvement of the skin quality of the whole face, lighten the wrinkles and plaques, repair the role of scars. Bursting is part of the picosecond laser spot removal procedure, which breaks up and decomposes the melanin in the subcutaneous tissue, thus achieving fast spot removal. 2. If you don’t blast in the process of picosecond laser surgery, then it can’t reach the expected effect, and it may only play a limited role in lightening the pigmentation, and its effect is not big and can’t get rid of the pigmentation completely. 3. Picosecond laser is suitable for those who have various kinds of spots on the face, such as freckles, age spots, coffee spots, brown spots, nevus of Ota, etc. Patients with keloid and pigmentation abnormality, women who are in menstruation, pregnancy or breastfeeding, and patients with serious systematic diseases or immune diseases are not suitable to take this method. If there is a need to remove spots, it is recommended to go to a regular hospital and have a professional perform the picosecond operation.