1. Rejuvenating existing follicles
Dermal papilla and related follicular cells help regulate hair growth. One strategy extracts these cells from resistant donor follicles, expands them outside the body and injects them into thinning scalp. The objective is generally to strengthen miniaturising follicles, not manufacture an unlimited supply of new follicular organs.
2. Multiplying donor potential
Follicle multiplication aims to turn a limited donor sample into a much larger supply of transplantable tissue or cells. If successful, it could relax the donor-area constraint of conventional transplantation. The key tests are whether expanded material retains its hair-inductive character and whether resulting hairs are predictable and durable.
3. Engineering follicles from cells
De novo regeneration attempts to build new follicular units from stem or progenitor cells. This is the closest match to the public idea of cloning. It also carries the greatest manufacturing and developmental complexity because the product must recreate a functional mini-organ and integrate it into human skin.
Why the distinction matters
A company may accurately report cell expansion or hair induction without having solved de novo follicle creation. Our coverage labels each program by its intended biological endpoint and current evidence stage so that early milestones are not mistaken for clinical availability.