Inquiry regarding filler duration

I have a complex about having a low nose bridge, but I heard that getting fillers can raise it a bit.

But I've heard rumors that the levels drop again after a while as the injection is absorbed into the body. Is that true?

I've never been hit, so I'm curious.

Then, how long will it last?

I am curious about how long the results last satisfactorily and when I need to get a re-treatment.

I was wondering if it was really necessary if the interval for the re-treatment is short.

I was interested because I heard the procedure takes a short time and isn't very painful, but I am writing to inquire because I am wondering if I should skip it if I have to do it frequently.

If anyone has tried this, I'd love to hear a detailed review.