I saw this from a company offering Regenera which sounds logical but wondered if it was actually true:
Advantages of skin biopsy versus adipose derived stem cells:
Skin tissue of the scalp is far more specific than adipose tissue, due to having the same embryological origin as the affected region of the hair loss. The science behind the regenerative capabilities is of powerful protein progenitor cells. These important cells inclosed within the micrograft, and provide a solution that is a powerful site-regulated drugstore that serves as a modulatory agent. By injecting these micrografts into the affected areas of hair loss, these cells are able to perceive the micro environment that surrounds them.
To obtain the same amount of progenitor you need at least 10ml of fat tissue, whereas, with a skin biopsy micrograft, you only need three small dermatological punches of 2 mm to achieve the same quantity.
Finally, skin biopsies of far less invasive than lipo with much less bruising.