Stem cells have become a huge buzzword in the esthetics industry. They are known for their regenerative properties in medicine, making them a promising component to rejuvenate aged skin. Many providers and consumers have turned to stem cells in esthetic procedures and topical skin care products to address the signs of aging skin. To better understand what stem cells are meant to do in the skin, you need to understand what stem cells are, where they come from and how they work in skin care products.