Nonsurgical treatment of a cleft chin, just as with routine chin augmentation, using volumizing fillers is a safe and effective way for dealing with a deep midline cleft, a congenitally receded chin, or chin recession related to age related bone loss or even irregularities that may result from surgical chin implants. (It also works well for smoothing out "cottage cheese" dimpling of the chin, especially when combined with the use of a neuromodulator, such as Botox, Dysport or Xeomin)..
I prefer the combination of Radiesse, a calcium-based volumizing agent, and Restylane SubQ, a robust hyaluronic acid volumizing agent for treating this region. Radiesse is known to stimulate neocollagenesis (native collagen production), which is an added plus of this agent, and Restylane SubQ gives remarkable lift.
Atlhough I routinely use Restylane SubQ in my practice in Israel, it is unfortunately not yet available in the United States In my Upper East Side NYC practice, for chin augmentation, I combine Radiesse with Perlane L (another member of the Restylane family of products) known for its lifting capacity. A total of 0.8cc generally would do the trick for a cleft (whereas 1.5cc or more might be required for a full nonsurgical chin augmentation).