Regenerating damaged organs and tissues, an act that once was considered magic, is currently entrusted to the surgeons who have allowed us to move from replacement and reconstructive plastic surgery to regenerative plastic surgery, through autologous and allogeneic cell-based therapies and growth factors. The enthusiasm for regenerative plastic surgery and for the treatment of some pathologies addressed by it, such as breast reconstruction, hemifacial atrophy, burns, scars, and aesthetic improvements such as breast and buttock augmentation, face rejuvenation and hair regrowth, has led the author, Professor Pietro Gentile, to rigorously investigate the possible new minimally invasive strategies based on adipose-derived stem cells, human follicle stem cells and growth factors contained in platelet-rich plasma. This book reports on the latest knowledge regarding the treatment of soft and bone tissue defects. Therefore, the goal of this text is to introduce and definitively establish this new and interesting field of plastic surgery, called regenerative plastic surgery.