How long do the effects of Ulthera last?

It has been about two months since I received 300 shots of Ulthera.

At first, I didn't notice much of a change, but after about two to three weeks, I felt my jawline gradually becoming more defined. When comparing before and after photos, my facial contours looked cleaner than before, and I was quite satisfied because people around me even asked if I had lost weight.

But lately, I've been wondering how long the effects of Ulthera usually last.

It has been about two months, and my jawline still feels defined. Will this look continue for another three or six months?

Those who have received Ulthera actually How many months did the effect last? I'm curious. I'm also wondering if it got better over time compared to when the effects first appeared, and then gradually returned to its original state.

In particular, for those who have received the 300 shots, please share your experiences regarding how long the effects lasted.