What is filler? Why do we need to inject filler?

Filler is a filler Hyaluronic Acid (Hyaluronic Acid) or HA for short is a substance used to fill the skin and under the skin. It is a substance produced to imitate substances that are in the body. It helps replace the missing body structure, which is a major cause of wrinkles and sagging. It can also adjust the structure under the skin, fill in imperfections on the face naturally, making the face firmer, and making deep grooves look shallower. It helps to look younger.