The best and most common treatment approach involves using neurotoxins such as Botox or Dysport to relax the muscle. This usually involves two simple injections. Once the muscle is relaxed, it prevents the chin muscle from dimpling the skin.
If the cause of chin dimpling is from volume loss, which can be the case as you get older, you may also notice the formation of lines that run down the corners of the mouth and down to the chin, called marionette lines. In these cases, treatment involves replacing lost volume with dermal fillers. This will address both issues, resulting in diminished lines and smoother skin.