Can regular Juvederm be used in cheeks just like Juvederm voluma?

While different dermal fillers are commonly used "off label" to treat areas for which they do not have specific FDA approval, there is a good reason why Juvederm Voluma, Restylane Lyft and other "thicker" fillers are used for facial contouring:  Juvederm Ultra and Restylane are made up of smaller particles, which makes them more suitable for filling fine surface lines in the skin; while Juvederm Voluma and Restylane Lyft are specifically engineered with a larger particle size to provide a contouring/ lifting effect.  To summarize: Juvederm and Restylane can be used in the cheeks (off label) but will not give you the same contouring results as Voluma or Lyft and will not last as long.

You can inject any filler anywhere, but that doesn't mean it will give you a good result. You will need to inject multiple syringes of Juvederm into your cheeks to get near the results that Voluma or Restylane Lyft will give you. Even then it probably won't last as long. Cheek volumization needs a filler that is bulkier than regular Juvederm. Hope this helps answer your question.

The short answer to the question of whether plain Juvederm can be used for cheek augmentation is "yes." A more complete answer is that it's not what I would choose to do for myself or my family. It is simply not robust enough to give sufficient lift, it attracts water to it (so there is a risk of unnecessary prolonged edema), and it doesn't last that long. Voluma XC, on the other hand,  is robust, provides the necessary lift, does not significantly attract water, and lasts up to two years. It's your face; you have to live with it, and the world is going to see it on a daily basis. In my opinion, it is not an area to risk being penny-wise and pound foolish.