Carbomer 940 (0.5% w/v) was used as a gelling agent to formulate Lav-SLN-G after optimizing the selected variables. 0.5% of Carbopol was dispersed in water for 24 h to prevent the formation of lumps. After 24 h, Lav- SLN dispersion equal to 3% in gel’s final volume was added and completely uniformed using a mechanical stirrer. Next, 20% propylene glycol and 3–4 drops of triethanolamine were added to the product, respectively. As soon as triethanolamine was added, an enhanced viscous solution turning to gel was observed [41 (link)].
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