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Topical Nano-emulgel for Skin Disorders: Formulation Approach and Characterization.

BACKGROUNDS: Acne vulgaris is a common chronic skin disease that affects around 9.4% (approx. 650 million people) of the global population. Growing research in the field of nanomedicine over the years has now been exploited in management of various human disorders. The nanomedicine concept has an immense opportunity for the effective management and control of acne disease by designing a novel, low-dose topical delivery system. Topical nanoemulsion-based gel preparations are said to have various benefits over the conventional formulations. The recent patents on topical anti-acne formulation (US 7241456B2; US 6897238B2; US 6284234B1) provided the concept to design thymol loaded nano-emulgel for topical application in acne.

METHODS: The objective of the current investigation was to design a thymol loaded nanoemulgel preparation by exploiting low-energy emulsification method for topical application in acne. Furthermore, developed formulation was characterized for thermodynamic stability, mean droplet size, zeta potential, drug content and in-vitro drug diffusion study.

RESULTS: The optimized thymol loaded nanoemulsion was found to be 13.60±0.117 nm with PdI 0.197±0.008. Nanoemulsions will provide an enormous surface area for better penetration of therapeutic agent into the pilosebaceous region, resulting better efficacy.

CONCLUSIONS: From the above studies, it concluded that aqueous-based gel vehicle of the developed formulation system exploited for topical delivery has moisturising properties which can improve local tolerability also.

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