Renovacare, based in New York, are developing this discovery and they say the key to the treatment is using skin stem cells to create the spray application. The patient gives a small sample of skin in order to extract the necessary stem cells, and within a few days the procedure is ready to be carried out. Trials so far have shown that an amazing 97.3% of these cells maintain their viability for regenerating skin when sprayed on to burns. US army veterans are the first group to take advantage of this incredible treatment.