Double chin, I'm curious about the effective treatment method and duration.

Hello! Is it because I'm getting older?
I am concerned that my double chin is getting worse and my facial line is collapsing.
I tried learning self-massage and jaw exercises, but I didn't see much effect, so I think I need to get professional treatment to improve it.

I've heard that there are several treatments to address double chins, including methods that break down fat and methods that improve skin elasticity.

What are some of the most effective treatments for improving double chins here?
Which treatment is more effective between fat breakdown and skin elasticity improvement?
I am curious about the total treatment period from start to finish, and the recovery period (bruising, swelling) required to return to daily life after the treatment.

If you could tell me roughly how long the effects last after the procedure and how to maintain them for a long time, it would be very helpful.