To me there are different kinds of facial changes. Those eye and cheek things are ridiculous.
The mouth things are horrid. Nancy Sinatra, and Melanie Griffith come to mind...But having your chin tucked up when it looks like a turkeys neck. Or having love handles and tummy fixed, i think is fine. No one sees them unless you are in a bikini. But they would make me feel better.
When you get to a certain age there are some things you just cant exercise away...So if modern medicine will help those things...why not?