Exosomes are nano-sized extracellular vesicles (30–150 nm) secreted by various cell types, including mesenchymal stem cells and dermal papilla cells. They play a pivotal role in intercellular communication by transporting proteins, lipids, and nucleic acids to recipient cells, thereby influencing numerous physiological processes. In skincare, exosomes have garnered attention for their regenerative capabilities. They promote collagen and elastin synthesis, enhance skin hydration, and accelerate wound healing. Clinical studies have demonstrated their efficacy in reducing fine lines, improving skin texture, and mitigating hyperpigmentation. These properties make exosomes a promising ingredient in anti-aging and skin-rejuvenating formulations.​

In haircare, exosomes contribute to hair follicle regeneration and hair growth. They stimulate dermal papilla cells, activate the Wnt/β-catenin signaling pathway, and promote the transition of hair follicles from the telogen (resting) phase to the anagen (growth) phase. This results in increased hair density, reduced hair loss, and improved scalp health. Exosome-based therapies have shown potential in treating alopecia and other hair loss conditions, offering a non-invasive alternative to traditional hair restoration methods.