Picosecond is picosecond laser spot removal, which is one of the laser spot removal treatment modalities. Its principle is to eliminate skin lesions through high-energy light and stimulate collagen production to achieve the effect of skin purification and rejuvenation. However, there are also the following differences between picosecond and laser spot removal: 1. Spot removal ability: the pulse width of picosecond is shorter, and the short pulse width of laser irradiation can greatly improve the absorption rate of pigment and increase the treatment efficiency. In addition, the pigment breakdown rate of picosecond laser is several times higher than that of traditional laser, which means better treatment effect. 2. Safety: In addition to shortening the treatment time and improving the treatment effect, picosecond laser technology with short pulse width also has the feature of high safety, mainly because the high energy light generated by picosecond instrument has short contact time with the skin and the treatment is more concentrated, so it will not produce photothermal reaction, so it basically will not cause The skin burns and avoids damage to the surrounding normal skin tissue. Therefore, compared to traditional laser, picosecond laser is safer, and the effect of skin rejuvenation and skin beauty is better than traditional laser, and the condition of the skin will be better after treatment.