Tofacitinib Citrate-loaded Nanoparticle Gel for the Treatment of Alopecia Areata: Response Surface Design, Formulation and In vitro-in Vivo Characterization.

Based on the results, the NPs and NPG formulations were depicted to enhance the activity of TFN compared to the free drug solution. TFN could be a safe and effective treatment for Alopecia areata. The tofacitinib citrate NPG could be a clinically translatable, safer topical formulation for managing Alopecia areata.