There are such things as neck exercises and despite what Arti says, there are muscles in the neck and chin area. The muscles there are actually directly connected to the skin so when you tighten and tone the muscle there it picks the skin up too. It's fairly common in Asian countries to practice facial and neck exercises. I can't say much about the machine but, if you are willing to spend 15 minutes a day making some weird faces you can tighten it up. You can youtube a ton of stuff or if you want I can try to find my notes and links on my busted computer. These helped me a lot when I lost 15lbs after quitting Rugby.
Creating cosplay heaven in my own private hell, one costume at a time.