A Systemic Review on Micro-emulsion: Liquid Dosage form for Topical Drug Delivery System

Abstract
Microemulsions (ME) is a system that combines water, oil, and an emulsifier / surfactant which is a form of volatile liquid, homogeneous and kinetically stable. Microemulsion is an attractive drug delivery system for topical administration. Due to its solubility, mild skin irritation, and watery swelling are used in the Topical Drug Delivery System (TDDS). By improving the quality of skin texture, it provides a level of penetration. The function of skin balance is to limit the penetration of bacteria, viruses, and other environmental factors. With standard drugs, skin penetration may take time and have not been able to provide immediate action. So, in this case, we used the Microemulsion-based Topical Drug Delivery system. Microemulsion increases solubility, protects the drug from environmental factors and improves drug bioavailability. MEs provide high penetration and the ability to penetrate into the skin. Because of this, the immediate action of the drug can occur in the infected area. Due to the presence of a hydrophilic and lipophilic environment, it provides outstanding biocompatibility. There are several test frames used to maintain stability, microemulsion kinetics.