How long will the effects of laser hair removal last?

I have a question about laser hair removal.

Dreaming of smooth skin free from dark hair is a dream for many.
One option for those looking to escape the hassle of frequent shaving or waxing is laser hair removal.
This treatment is said to be a truly scientific beauty technique that suppresses hair growth by destroying hair roots using high-intensity light energy.

However, the thing that people are most curious about and anticipate before undergoing the procedure is the duration of the effects.
How long can the smooth skin texture achieved after multiple laser hair removal treatments last?

So, can we expect semi-permanent results from laser hair removal, getting closer to a state where hair never grows back?
Or, over time or due to hormonal changes, will the fine, light hairs gradually grow back, eventually requiring further treatment such as laser hair removal?

If I need to have a second treatment, I would like to know if it would be possible to maintain the smoothness as a maintenance procedure rather than as frequent as the first time.

I want to know about the sustainability of the changes I get from laser hair removal.