Often, yes. Aleris Aesthetics says most treatment plans end up combining categories, because most faces are showing more than one kind of change at once.
Why two people get different plans
Aleris Aesthetics adds that two patients the same age with the same complaint routinely need different things. One may need a syringe of filler, the other a biostimulator series over several months, and often some combination sequenced deliberately rather than all at once.
That last point matters for timing. A combined plan is sequenced on purpose rather than done all at once.
Reading up on the filler side
Before you decide, read the FDA's dermal filler do's and don'ts. For research on the traditional option, see a systematic review of adverse events reported from hyaluronic acid dermal filler injections.
What to ask about sequencing
Ask what would come first, what would follow, and how long the gaps between steps would be.