Exosomes (30–160 nm) are a unique subpopulation of extracellular vesicles (EVs) that mediate long-distance intercellular communications in various biological processes. They can be found in various body fluids including plasma, malignant ascites, urine, amniotic fluid, saliva and milk, which contains a tissue-specific signature wherein a rich cargo of proteins, RNAs, cytokines and lipids are selectively packaged. Exosome could serve as an emerging platform for diagnostics and drug delivery system. CosExo™ Exosome is a cutting-edge skincare brand that harnesses the power of exosomes in its products. Exosomes are small extracellular vesicles secreted by cells, known for their ability to effectively deliver active ingredients to target cells and promote skin regeneration.