Exosomes have traveled from the frontiers of regenerative medicine, through the aesthetic clinic, and now onto the shelves of the cosmetics aisle. They have become one of skin care’s buzziest ingredients, but the industry is now looking beyond exosome amount and looking for practical function. Exosomes are microscopic messengers, released by skin cells, that contain proteins, lipids, and genetic material. In cosmetics, exosomes help strengthen the communication between skin cells that aging impa