Exosomes in Dermatology

Exosomes are nanosized extracellular vesicles that play a significant role in dermatology by influencing keratinocyte and fibroblast proliferation, pigmentation pathways, and immune modulation in conditions like atopic dermatitis and cutaneous lupus. They are particularly effective in wound healing, where they reduce proinflammatory cytokines, enhance angiogenesis, and improve collagen deposition and scar quality. Early studies suggest exosomes also aid in regenerative skin care, such as reversing photoaging, improving skin elasticity, and stimulating hair follicle growth. Although their current use is limited to cosmetic applications without FDA approval, international experiences indicate potential therapeutic benefits for chronic wounds, inflammatory dermatoses, and pigmentation disorders. Exosomes represent a promising biologic platform that could complement existing therapies, highlighting the need for further research and regulatory guidance.