Has anyone tried fillers?

I am considering getting filler injections, but since prices vary significantly from clinic to clinic, I am wondering what a reasonable amount would be. I would also like to know if there are cost differences depending on the area treated.

I am curious about how long fillers typically last and how much individual variation there is. I would also like to know if the effects settle naturally immediately after the procedure, or if there is a period during which they might look unnatural. Additionally, I would like to know how long side effects such as swelling, bruising, or inflammation persist, and what the recovery period is like.

What points should you definitely check to receive a filler procedure safely?

I am most curious about the duration and longevity of the results. I would like to know how long the effects typically last after a single treatment and whether there are significant differences depending on the area treated. I have heard that the duration varies depending on the location—such as the lips, nose, and chin—and I am curious to know how much of a difference this actually makes. I would also like to know if the duration varies depending on individual skin condition or lifestyle habits, and if there are cases where the product is absorbed quickly. I am also curious about the appropriate time for a touch-up.

I am curious about the significant price differences for fillers across different clinics. I would like to know why the cost varies even for the same procedure on the same area. I wonder if the price depends on the type or brand of filler used, or if it is influenced by the medical staff's experience, the clinic's location, or equipment. Additionally, I would like to know if the disparity between very cheap and very expensive clinics affects actual effectiveness or safety. I would also like to know what criteria I should use to compare prices when determining a reasonable cost.

I have heard that it is a relatively simple procedure, but I would like to know the actual risk of side effects. I am concerned about the possibility of complications such as inflammation or blood vessel blockage, in addition to temporary symptoms like swelling and bruising after the procedure. I would also like to know what I must check before and after the procedure to ensure safety, including how important it is to receive treatment from experienced medical professionals.