Restoring volume here lifts the midface and softens everything below it. Filler gives an immediate result; Sculptra builds your own collagen gradually over months.
The cheeks are a structural anchor for the rest of the face — restoring volume here tends to soften nasolabial folds and under-eye hollowing without treating either directly. Filler gives a result you see the same day; Sculptra takes a slower route, stimulating your own collagen over a few months for a more gradual, cumulative change.
This is general education, not a treatment plan. What you actually need depends on your anatomy, muscle strength, and goals — Rocio determines that with you in person.