Ultra-picoseconds are usually done at least one month apart before hydrafacial treatments, but it is not possible to generalize due to different personal circumstances. Ultra-picosecond belongs to a kind of laser treatment, is the use of laser photothermal effect, can target the destruction of melanocytes without damaging the surrounding tissues, can also stimulate the fibroblast reaction, so that it generates collagen fibers and elastic fibers, play a role in improving the skin texture of the whole face. Hydrafacial injection refers to the use of injections as well as the penetration of nutrient solutions, such as hyaluronic acid and vitamin C, into the dermis so that the skin absorbs enough nutrients to achieve the effect of removing wrinkles. It should be noted that the treatment should be avoided during menstruation, and if a woman is breastfeeding, she should report to her doctor in advance. Makeup should not be worn on the day of treatment, and the face should be kept clean. It is generally recommended that at least one month after the ultra-picosecond before carrying out water light injection, the skin after the laser action needs a certain amount of time to repair, different patients are different, need to be analyzed in conjunction with the specific circumstances. If you want to take hydrafacial injection after hyperpigmentation, you need to take into account your own situation, as well as your personal needs, and ask your attending doctor for guidance.