I feel like the effects of my facial fillers don't last very long.

Maybe it's because I have a thin face, but now that it's been 6 months since I got the fillers, it feels like almost all of them have sunk away.

People around me say it lasts a year, so I'm not sure if it's just me losing weight exceptionally fast, or if people with less body fat naturally have a shorter maintenance period.

How often do you usually get vaccinated again?