Does the effect of forehead filler naturally decrease little by little over time?

Since this is my first time looking into fillers, I'm more curious about how it will look a few months later than right after the procedure lol

Even if I like the shape after getting forehead fillers, I think I need to know how long it lasts over time so I can plan for the next procedure.

Does the duration of forehead filler effects vary significantly depending on the product or the individual?

I'm curious if it doesn't suddenly drop in volume one day, but rather gradually returns to its original state over a few months haha.

I think it would actually be better if the effect naturally diminished.

I'm satisfied at first, but I think I'd be flustered if my forehead suddenly looked flat again one day, haha.

When the effect of forehead fillers is wearing off, is it just enough to notice yourself looking in the mirror and realizing that it has shrunk a little?

Or I am wondering if the difference is only noticeable if I compare the photo to the appearance immediately after the procedure.

Also, are there many people who get forehead fillers once, wait until the effects have almost worn off, and then get them again?

Rather than blindly repeating things according to a set schedule, I would like to get a consultation when I become concerned about the volume again.

I am also curious if receiving the same forehead filler repeatedly results in a smaller amount being maintained compared to the initial injection.

Would it be possible to create the shape initially and then manage it later by supplementing only the 부족한 parts with small amounts?

For those of you who have received forehead fillers for a long time, how long did you feel the actual duration lasted?

Please share your experience on whether the feeling was similar the first time you received it and how it lasted after the second time haha.