Is it meaningful to get Botox before wrinkles form rather than after?

These days, people around me say they get Botox after their wrinkles have deepened.

I noticed there are people who manage it proactively rather than getting hit.

I don't have very deep wrinkles on my forehead or between my eyebrows yet, but

I started to see lines little by little when making facial expressions.

However, I also worry that if I get it too early, I might be getting the procedure done at a time when it isn't really necessary.

Because the speed at which wrinkles form changes as you get older

I want to know if doing it as a preventive measure is actually helpful.