I am considering forehead fillers.

Hello. My forehead itself is convex, but the volume is uneven, and it sinks flat from the center downwards. I am seriously considering taking the plunge and getting forehead fillers. However, now that I am actually about to get the procedure, I am worried about side effects or an unnatural look. If anyone has received forehead fillers, I would like to ask a few questions. I am curious if a heavy feeling or a foreign body sensation in the forehead persists for a long time after the procedure. Also, I have heard that swelling often moves downwards immediately after the procedure, affecting the areas around the eyes and nose; I am wondering how many days it usually takes to return to daily life. Since this is an area that can significantly change one's facial appearance with just one treatment, I am being very cautious about deciding on fillers. I would be truly grateful if you could share your honest reviews—whether you are satisfied or if you have any regrets—even if it is just a little advice.