Absolutely do not do this, and if you find someone who is willing to do it, run away. Neuromodulators are used to make muscles stop contracting. Putting it into your cheeks will mean that you cannot move your central face, which means you can't smile or move your mouth properly. You can have targeted areas of treatment, like your jawline, forehead, crow's feet, etc. But no, you should absolutely not try to use any neuromodulator on your full facial muscles, or I promise you won't be able to talk, smile, eat, or look normal at all. "This answer has been solicited without seeing this patient and cannot be held as true medical advice, but only opinion. Seek in-person treatment with a trained medical professional for appropriate care."