Aren't lifting procedures like Denserty just a one-time treatment?

These days, rather than feeling like my skin is sagging
My first impression is that your facial features have become less defined than before.

So I'm looking into lifting procedures.
I've also heard a lot of people talk about the approach of managing your skin periodically according to your condition, rather than getting a strong treatment once.

There is also a saying that checking your current skin thickness or elasticity is more important than just choosing the type of procedure.
I don't know what I should check during the initial consultation.