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Objectives: The current work presents a formulation of curcumin-loaded transethosome (CRM-TE) in the form of a gel and its characterization.Methods: Thirteen formulations were prepared by varying the concentration of Phospholipon 90G as lipid, ethanol, and ratio of lipid: Span using Box- Behnken Design. The optimized formulation was characterized by vesicle size, entrapment efficiency, drug retention, drug permeation through skin, and morphology. Parameters of CRM-TE were compared to other vesicular systems that include liposomes, ethosomes, and transfersomes. Optimized CRM-TE was incorporated into gels, and comparative evaluation was performed. CRM-TE gel was kept at 5±3°C, 25±3°C, and 40±3°C for 180 days, further evaluated for entrapment efficacy and vesicle size.Results: CRM-TE showed 286.4 nm vesicle size, 61.2% entrapment efficiency, 19.8% drug retention, and 71.3% drug permeation at 24 h in the skin. It was found superior in terms of all the parameters as compared to other vesicular formulations. CRM-TE gel also exhibited best characteristics in terms of entrapment efficiency, drug retention, and drug permeation. CRM-TE gel exhibited better stability at 5±3°C in terms of vesicle size and entrapment efficiency as compared to other storage conditions.Conclusion: CRM-TE gel could offer efficient delivery of curcumin through topical route.

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