Was trying to find stuff related to Dr. Cotsarelis and came across above article and while skimming through it noticed two important things.
1). Dr. Cotsarelis also noted that the newly formed hair did not contain pigment. This is because the skin on the backs of mice does not contain melanocytes, the cells which create melanin and provide skin, eyes, and hair with pigmentation. However, the newly formed hair follicles did have melanocytes, suggesting any similar hair follicle creation in humans would result in colored hair.
That should take care of the skepticisim people had regarding the requirement of EGF inhibitor to have colored hair. WNT proteins themself alone Would Create hair with Color!
We have to keep in mind that the original research paper “Wnt-dependent de novo hair follicle regeneration in adult mouse skin after wounding” by Dr. Cotsarelis primarily was about WNT, NOT EGF. So we can safely experiment with WNT alone and bypass a very tricky variable (EGF inhibition).
2). In the meanwhile, Dr. Cotsarelis claims that it will be at least two to three years before a marketable cure for baldness can possibly be developed.
I find this prediction very encouraging. This article was published August in 2007, since then follica has already started a research study which should have ended by now. So we are already past the 1 year mark, so a cure could be 1-2 years away.