Kybella will help with the neck double chin.
The mouth area would need extremely small microcannula lipo.
Kybella is not recommended near the mouth due to risk of nerve irritation from the product.
Kybella / Coolmini
It is often tricky to determine the true needs of a patient from a photo but given your height, weight, age and minimal appearance of fat under the chin you may benefit from Kybella or Coolmini. Both are great non-surgical options. Kybella is an injectable treatment containing deoxycholic acid, a naturally-occurring molecule in the body that helps the breakdown and absorption of fat beneath your chin. Coolmini is the new handpiece from Coolsculpting and uses cryolipolysis technology, to target and destroy fat cells. Be sure to seek consultation with a board-certified Dermatologist or Plastic Surgeon with experience of all options for best results. Good luck!
Kybella or Liposuction
Thank you for your question and for posting appropriate pictures. You seem to be a good candidate for Kybella. This is a series of injections that destroys the fat underneath the chin. This procedure must be repeated a few times. You might also consider liposuction. You will need to have a consultation with a board certified plastic surgeon for precise recommendations.
Given your age and excellent skin quality, one or two vials of Kybella should remove the small amount of submental fat you have and give you a sharper neckline.
There are two options for you.The first option is liposuction of the neck which is a simple outpatient procedure. The second option is with Kybella which is a series of injections in a single session in the office.