Yes Injection of slimming needle is to inject a proper amount of liquid into the obese part of the body, block the supply of nutrition to muscle tissue, and gradually shrink local muscles, thus achieving the effect of slimming. If you are allergic, it is easy to stimulate skin tissue after injection of slimming needle, which will lead to skin allergic reaction and skin itching and pain. If the needle is improperly operated after injection, it will lead to uneven skin, even muscle relaxation and muscle atrophy.