Once the culture handling has been established, it does not matter if hair from old or young, sick or healthy, male or female donors is used. One outgrowing hair root is enough to obtain enough keratinocytes for a successful reprogramming. Our group has already obtained keratinocytes from newborn babies as well as from older people, both healthy persons and patients who suffer from different genetic diseases. All the volunteers who gave hair samples were pleased that the procedure is noninvasive and does not take longer than a few minutes.