How many weeks does it take for Denserty to show proper effects?

If you look up reviews of Density, some people say their jawline became defined immediately, while others say it improved over time.
So, I am curious about when the actual effects appear.
Immediately after the procedure, does the skin only feel tight, and will the elasticity improve further later?
I would also like to know how many days or weeks it usually takes to feel the changes.
I am also curious whether the jawline or cheek sagging improves first, or if I feel the skin texture or elasticity first.
I've heard that changes are more visible when comparing photos than in a mirror. Is that actually true?
I am also curious if there are cases where the effects are visible immediately after a single treatment, but improve further over time.
Conversely, are there any of you who haven't noticed any significant changes even after a few weeks?
I'm curious about the actual timeframe experienced by those who have received it.