A Fillers can absolutely be used to balance asymmetry of the face, such as small chin. Your options include standard hyaluronic acid fillers (We prefer Restylane products in our practice, but many injectors use Juvederm products). These last 8-15 months, so they are not the most durable fillers, but you can see how you like the results and next time use a longer lasting filler. Radiesse works great for facial augmentation, and lasts 12-18 months in my experience. Sculptra is a biostimulator, and lasts 2-3 years. Biostimulators work by stimulating your own skin cells to add collagen to your face. They can add volume and are used much like hyaluronic acid fillers, but tend to last longer. Bellafill (also a biostimulator) is a 5 year filler, and we call it the Louis Vuitton of fillers in our office, because it is really the best. Good luck, and I hope you love your filler results!