Many skincare products promise collagen repair. A new study published this week sheds new light on how to effectively replace this vital protein. A novel mRNA delivery method uses extracellular vesicles to initiate collagen replacement in photoaged skin, according to researchers at the MD Anderson Cancer Center. A single injection increased collagen production and reduced wrinkle formation in targeted areas for two months. Researchers say the new delivery method could be used to treat a number o...