Picosecond, or picosecond laser, has the efficacy of whitening and removing spots, removing tattoos, removing fine lines on the face, and rejuvenating the skin. 1. Whitening and removing spots: the duration (pulse width) of each laser pulse of picosecond laser reaches the level of picoseconds, which can help the skin to crush melanin more finely at a faster speed and with more powerful energy, thus it has a very good whitening and removing spots; especially it can help patients to improve chloasma and reduce and alleviate the occurrence of the phenomenon of anti-blackness, thus it can help patients to improve chloasma effectively. 2. Remove tattoos: due to the good crushing melanin effect of picosecond laser, picosecond laser can also be used to lighten and remove tattoos, remove semi-permanent eyebrow tattoos, remove birthmarks and other localized melanin deposition of the skin. 3. Remove facial fine lines, skin rejuvenation: picosecond laser’s high energy concentration can also widely and intensively stimulate fibroblast reaction and activation, promote the dermis of the skin to generate collagen fibers and elastin fibers, so as to let the skin texture to get tender white, tightening, lifting and other aspects of the improvement, and has the advantages of short action time, fast treatment, small thermal damage, short recovery period, etc., so the picosecond laser can help the patients to achieve better treatment! Effect. It should be noted that the operation of picosecond laser requires patients to go to regular hospitals or beauty salons to avoid the occurrence of adverse reactions.