Preparation and evaluation of herbal mosquito repellent gel

The present study focuses on the formulation and evaluation of a polyherbal mosquito repellent gel incorporating extracts of Lemongrass, Rosemary, and Shankhpushpi. Phytochemical screening confirmed the presence of key bioactive compounds. Alkaloids were detected in Lemongrass and Rosemary, while terpenoids, flavonoids, tannins, and phytosterols were found in all three extracts, indicating potential therapeutic and repellent properties. The gel was formulated using Carbopol 934, Triethanolamine, Glycerine, and Distilled Water as the base. The final product exhibited a light green transparent appearance, with no clogging, good homogeneity, and a smooth texture. Evaluation results revealed optimal physicochemical properties, including a pH of 7.08, indicating skin compatibility, and a viscosity of 3451 cP, suggesting good consistency. The spreadability of the gel was measured at 18.76 g·cm/sec, and it demonstrated good washability. Most importantly, the gel effectively repelled mosquitoes during testing, validating its functional efficacy. These findings suggest that the formulated polyherbal gel holds promise as a natural, effective, and user-friendly mosquito repellent product.