How long do fillers last? I'm curious.

I'm worried about my facial volume these days, so I'm looking into fillers.

I've been interested in fillers for a while because I heard they add volume to sunken areas and naturally enhance facial lines, but I'm hesitant.

The duration of fillers varies depending on the type, but since they usually last from a few months to over a year, I think the maintenance cycle is also important.

There was also a lot of talk about how the appropriate volume and design are important, as excessive filler can look unnatural.

I heard that swelling or bruising can occur after filler procedures, so it is recommended to allow some time before an important event.

I am curious about the side effects of fillers and how long they last.