If you’re at an “earlier age”, and there are no static lines on the face, it will not make you “look younger”. Anti-wrinkle injections may prevent static lines from forming, but it cannot turn the clock back, so to speak, if there’s no signs of aging currently present.
Dermal fillers add volume and a patient in the early-mid twenties have not gone through the anatomical aging process, yet. This often occurs in the late twenties to early thirties.
Using dermal filler in this age bracket is normally used for “beautification” only, but this doesn’t necessarily make you look younger. In fact, it can actually have the opposite effect.