It's called Korezysel Fit, which is a skin tightening laser.

Step 1: Use something like a roller to roll over the skin surface to stimulate it.

Put on level 2 gloves and massage with warm heat.

It is a procedure that involves massaging with a flat instrument in three stages.

There is little pain during the procedure and no visible marks afterward, but I feel skin elasticity the next day. It's not a dramatic effect, so I do it periodically for maintenance. Since there are no visible signs, it's famous that celebrities get it done the day before filming.