I Want Chubbier Face, What Type of Filler?

At you age the best option might be to add volume to the face by injecting fat.  It will give you long lasting result and create the most natural appearance.  Other fillers might appear well for a period of time, but given their temporary nature would require constant replacement.  And as you older it would require injecting more and more fillers to get the result that you are looking for.  Fat grafting, on the other hand, might require occasional "touch up", but does not need constant replacement.  Best of luck!

Volume and contouring of the cheeks can be created with well-placed fillers (Voluma, Radiesse, Bellafill) and Sculptra. Implants or fat are alternatives. Botox and radiofrequency can help slim and contour the jawline. Liposuction can help slim the face. Ultherapy, J Plasma and rf treatments can provide skin tightening and lift. I recommend getting a formal evaluation with a facial sculpting expert. Best, Dr. Emer

There are different options - all based on your existing facial contours, amount of fat you have, exactly what you want to achieve. Sculptra can be used globally about the face and is an excellent choice for altering contours all over. The instant fillers you noted, both have decent longevity. Voluma is a dissolvable gel and Radiesse is not, so that could impact your decisions. It's important to view the face as a whole - otherwise if you only add cheek volume but actually need volume in adjacent areas for blending, then your result could look somewhat unnatural. There are a lot of sub-skin structural compartments that shape the face and these all need to be considered.You will need to see a physician to get a useful assessment and recommendation.