The chin crease, technically referred to as the mental crease, the kind that is quite evident in your photos, is a very common problem that can easily be treated by the use of injectable fillers that provide lift, such as Restylane Lyft, which I use in my Manhattan practice or Hyabell Deep, which I prefer in my Israel satellite facility, where a far greater number of regulatory agency approved fillers are available. Not only can the crease be improved in this way, but elevating the crease also secondarily raises the lower lip immediately above enhancing and creating a more sensual pout. I have found this to be a very popular treatment in my practices, and one which often is accompanied by nonsurgical chin augmentation when this is found to also be necessary. Make sure that you consult with an experienced board certified aesthetic physician, since this is an advanced injection technique that should not be left to the hands of novice injectors accustomed to treating ordinary smile lines with simple Restylane or Juvederm. Best of luck.