In fact, the most important thing is hyaluronic acid, so why do so many celebrities say they need hyaluronic acid? Hydraulic needles are now available in injection type and smear type. Personally, I think the smear type is more convenient and safer. There are no side effects, and there are many easy-to-use ones to choose from, such as Luhanzhi Water-Glow Needle, Kotur Water-Light Needle, and Tujiou Water-Light Needle