Advances in Research of Hydrogel Microneedle-Based Delivery Systems for Disease Treatment
Microneedles (MNs), composed of multiple micron-scale needle-like structures attached to a base, offer a minimally invasive approach for transdermal drug delivery by penetrating the stratum corneum and delivering therapeutic agents directly to the epidermis or dermis.Hydrogel microneedles (HMNs) stand out among various MN types due to their excelle