Can hair follicles grow back?
If you lose a hair and it looks like a hair follicle has gone with it, there is still a chance for the follicle to grow back. But if you lose a hair follicle, it will never grow back again.
Around each hair follicle are stem cells that tell the follicle how to behave. So what controls the hair follicle are the stem cells around it. These cells are genetically encoded to tell the hair when it’s time for the hair follicle to go into a resting phase.
The stem cells won’t disappear – even if you lose all your hair.