Hair multiplication - Donor hair follicles are removed from the scalp and then manipulated in a way that the total amount of hair is increased. This can involve using transected, or cut, hair follicles and implanting them directly into the scalp with the hope that the follicles will regenerate and grow a complete hair. Another technique uses plucked hair fragments rather than whole or transected follicles.
The idea is that some germinative cells at the base of the hair follicle will be pulled out along with the hair. Once the hair is re-implanted, these cells would be able to regenerate a new follicle. The concept behind hair multiplication using plucked hair is that it is an easy, non-invasive method of obtaining germinative cells. Also, the hair shaft of the plucked hair acts as a ready-made scaffold to introduce and align the germinative cells at the new site.
