What does it mean?

[gmonasco]

It's hard to tell whether they're using "new hair follicles" synonymously with "new hairs" or not. If HSC were prompting existing, non-producing follicles to start regrowing hair, those would be "new hairs," but they wouldn't technically be "new hair follicles."

[2020]

I hope they'll have a seperate compound for just "reviving" existing follicles as the follicles are already aligned in a perfect pattern underneath the skin and that way it would look more natural if they just revived the old follicles...