The term 皮秒 refers to “picosecond,” a unit of time equal to one trillionth of a second. In skincare, 皮秒 laser technology delivers extremely fast energy pulses to shatter pigment and stimulate collagen production. Unlike older nanosecond lasers, 皮秒 treatments offer higher precision, reduced side effects, and improved skin clarity, making it a preferred option for people seeking s... https://www.femio.com.hk/fotona.php