Let’s talk WHOLE FACE, as ONLY LIPS will NOT do much, it’s like put the cherry on the saggy, dull cake, would that work?-NO!
But, why not just get lip or cheek filler if that’s the area you want to change??? It’s a bit like painting a front door in isolation to the house, the windows, It’s like waxing the bonnet of the car and not doing the rest. That’s not to say you do a whole lot of treatment on the car, the face. It means you respect it carefully, you balance everything.
I’ve always been a believer that you can only treat the face as a whole, You cannot isolate features. Feature isolation has never been on the cards for me. You have to respect a face as a whole.