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Microneedle Patches Deliver Stem Cell Exosomes and Green Tea Extract to Repair UV Skin Damage
Researchers developed microneedle patches that deliver human umbilical cord stem cell exosomes combined with EGCG (green tea extract) directly through the skin. In laboratory and animal studies, this combination significantly reduced UV-induced skin damage by decreasing inflammation, preventing DNA damage, and promoting tissue repair. The microneedle delivery system overcame traditional barriers to skin penetration, allowing these therapeutic agents to reach damaged tissue more effectively than topical applications.
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