Unfortunately, if you struggle with permanent hair loss, scalp micropigmentation cannot make your hair grow back, as the purpose of the treatment is to create the illusion that you have more hair density than you actually have. On the bright side, scalp micropigmentation will give you the look of short hair or a tight buzz-cut. It is recommended to keep your hair on the short side in order to obtain the most natural outcome.
Lastly, if you are worried about scalp micropigmentation damaging the hair you already have, you should not be concerned at all, as this treatment is similar to tattooing. Therefore, the pigments used will have no side effects on hair follicles, and you should expect your typical hair growth to remain the same after you get scalp micropigmentation.