I have a question.
If those hairs treated with laser(Alexandrite or Diode) doesn’t regrow one year after the last treatment. Could that means that the hair will never grow back again?


If hairs have not returned after a year after your final treatment, it’s quite likely that hair follicle has been permanently destroyed. However, that doesn’t mean you’ll never see another hair again. All follicles have the potential to grow a hair, and some that don’t have one now might be triggered as you get older.

So, by my arbitrary standard, one year after finanly treatment probably means it’s gone for good, but he might have a pesky neighbor who shows up to replace him down the road.