Face-lifting needle, also known as "botulinum toxin", is a toxin secreted by botulinum in the process of reproduction. It was used as a chemical and biological weapon in World War II. It can cut off nerves, lead to muscle paralysis, and finally suffocate or die of cardiac arrest. After the war, the beauty industry diluted botulinum toxin for face-lifting, so botulinum toxin is also called face-lifting needle. Although it is a diluted botulinum toxin, it is still very harmful to the body. I have to admire the courage of people in the beauty industry.

The principle of botulinum toxin face-lifting is to cut off the facial nerve's domination of muscles, while muscles without nerve control will slowly shrink after a long time. This creates an illusion that the face is getting thinner. Long-term repeated injection of botulinum toxin will have two hazards, because the nerve damage caused by botulinum toxin is irreparable, and facial nerve injury will lead to facial expression rigidity, facial paralysis and even facial deformation. Moreover, the nerve damage caused by botulinum toxin is uncontrollable, and it often damages a range of nerves. Therefore, after injection of botulinum toxin, it is not only the masseter muscle that atrophies, but also the temporal depression caused by atrophy of the temporal muscle.

Temple depression is due to facial muscle atrophy.

Summary: Fat face is caused by fat accumulation and metabolic disorder, but the effect achieved by face-lifting needle is an illusion achieved at the expense of health and beauty.