Shumeihui Bai Yueguang Shuiguang Needle is not needle-free. According to the principle of needle-free water lamp, needle-free water lamp generally refers to the use of needle-free high-pressure syringe to inject drugs into the skin surface tissue, so as to achieve the purpose of hydrating and moisturizing. At the same time, it can also play the role of whitening and repairing, and the harm to the patient itself is also small. Shumeihui Baiyue aqua needle is different from needleless aqua needle. Shuiguangzhen has a common syringe needle, while the needleless Shuiguangzhen completely passes through the high-pressure syringe, so Shumeihui Bai Yueguang Shuiguangzhen is not needleless.