The roller needle can be used with medical nutrients. There are actually a lot of effects of facial rolling therapy. According to the difference of the selected nutrients, different functions can be realized. Hydrating nutrient solution can replenish moisture for the skin, increase skin collagen, and alleviate the problem of dryness and roughness; repairing nutrient solution can repair the damaged skin, and improve the problems of enlarged pores, darkness, uneven skin color, etc.; whitening nutrient solution can play a role in brightening the skin color and whitening the skin, and it also helps to fade away various kinds of pigmentation and sun spots; anti-aging nutrient solution can replenish collagen for the skin and reduce fine lines. The sterile disposable cosmetic roller needle is mainly used with a handle and a syringe (two different models), which can be switched by simply turning them over to suit different situations. The roller needle can be used not only for treating commo…