Application of Nanotechnology in the Treatment of Alopecia

The study analyzed the application of nanotechnology in treating alopecia by reviewing literature from the past 6 years. It evaluated 11 drugs/actives in 19 nanostructured systems, including lipidic, polymeric, and nanocrystal systems. These nanoparticles ranged from 9.3 to 339.0 nm in size and showed 68 to 100% encapsulation efficiency with stability lasting 7 to 180 days. In vitro, ex vivo, and in vivo tests demonstrated that these systems effectively delivered and accumulated drugs in hair follicles, increased hair growth rates, prolonged drug release, and were non-cytotoxic. The study concluded that nanotechnology showed promise in enhancing the efficacy of topical alopecia treatments and reducing adverse effects. However, maintaining the physical stability of nanostructures remained a significant challenge, potentially hindering large-scale commercialization.