From Puretech website, i never looked at it before
Follica is developing a complete treatment system for hair loss, informed by scientific rigor, clinical research, and user experience design. Our approach aims not only to improve existing hair growth, but also to grow new hair. Our technology is based on a proprietary approach intended to create an "embryonic window" in adult skin, allowing new follicles and new hair to form from epithelial stem cells. This regenerative effect is called hair follicle neogenesis. Follica has an exclusive, worldwide license from the University of Pennsylvania to develop and commercialize this potentially breakthrough technology, clinically demonstrated to stimulate the genesis and development of new follicles in adult humans.
So can we take that last sentence to mean they got it to work in a human?
Problem is (I guess) we don know 'what' the new follicles do yet, or how they behave once created.