A "pebbly" or dimpled chin is softened effectively using muscle-relaxing injections. Just 1 or 2 tiny injections relax the chin muscle in 3-10 days. Results last up to 6 months. For chin augmentation, fillers such as Perlane or Restylane SubQ, or fat, are injected. This procedure improves facial proportions in those with a receding or ill-defined chin.