I want to know the characteristics of fillers!

Lately, my face feels like it has lost its overall volume, so I am considering how to naturally fill in the sunken areas. Naturally, filler treatments are the first thing that comes to mind for immediate changes, but choosing one is difficult because there are so many types. I am debating between domestic and imported products. Does anyone know the distinct characteristics or differences between each type of filler? I am curious if detailed features, such as duration of effect, spread after injection, and how well the shape holds, vary significantly from product to product. I would appreciate some tips from those who have personally received filler treatments on what criteria to use when making a wise choice. Please leave a comment!