At what age is lifting procedures usually started?

While the rate of aging varies greatly from person to person, at what age do people typically start getting lifting treatments?

I'm more worried about my nasolabial folds and double chin than other parts of my body.

I think it wouldn't be good to start the lifting procedure too early, and

It also looks bad to just leave it untreated when aging starts...

I'm curious about the average age at which people start the procedure.