The dangerous place is the dosage, because the dosage used for wrinkle removal is very small, and the facial expression will be stiff if you hit too much, and nothing else.

I use hyaluronic acid to enrich my nose, because my nose bridge is OK, so I use it sparingly. I don't feel anything. The eye of the needle disappeared in a day or two.

In addition, because hyaluronic acid will be absorbed by body tissues, the effect can only last for a period of time.