Clinically advanced and exosome-infused, this formula delivers powerful rejuvenation for aging skin. Each bottle contains 3.5 trillion exosomes—one of the highest concentrations available—and over 600 growth factors and cytokines to support visible renewal. It’s also the only growth factor serum clinically proven not to accelerate skin cancer cells. Experience cutting-edge skin technology with StemFactor MD Growth Factor Serum.