I am curious about reviews regarding the effects and pain of Ulthera.

I'm considering Ulthera because I heard it's the representative lifting procedure.
I've heard that it is definitely effective, but I'm wondering if the pain tends to be quite severe.
I also want to know if the effects are visible immediately after receiving it, or if they develop over time.
There are reviews mentioning sunken cheeks or side effects, so I am also curious about who this is suitable for.
I am also curious about your actual experience regarding how long the effect usually lasts.
I would like to hear a lot of reviews on whether the satisfaction level is high after just one session.