I have been asked how this can happen. We are now doing extensive research into wound healing and the appearance of hair after a wound has healed. This man grew hair from the sides of his burn wound (my assessment of the photos) and this new skin brought along with it hair follicles that clearly were different than his balding follicles which had disappeared prior to the burn. In our experimental work, we have created such wounds and found hair growth not-infrequently. This is the theory behind microneedling that is now performed regularly by many men with good results. The wound created by the microneedling go down to the depth of the stem cells (1-1.5mm below the skin) and with persistent wounding, hair is stimulated through the impact on the stem cells reached by the needling. This was shown in the previous post on this blog.