7. ROLE OF MICROEMULSION IN ADVANCED DRUG DELIVERY SYSTEM
Microemulsions are transparent, solid, isotropic blends of oil, water, and surfactant, often mixed with a co-surfactant. It serves as potential drug carrier systems for administering orally, topically, and parenterally. This has gained a lot of coverage not only for extended release but also for targeting drugs to a particular site. They are susceptible to sustained and targeted delivery, in addition to oral and intravenous delivery, through ophthalmic, dental, pulmonary, vaginal, and topical routes. Specific poorly water soluble delivered by oral route also found increased bioavailability. We show effective topical delivery mechanisms for various active pharmaceutical ingredients for both the therapeutic and cosmetic applications. The topical it shows very quick penetration of the active molecules which is mainly due to the wide surface area of the internal process, their contents also reduce the stratum corneum's barrier property. They have “great applications and uses in pharmaceuticals, agrochemicals, cutting oils, biotechnology, food, cosmetics, analytical applications, detoxification” of the environment etc. The main aim of this review paper is to describe microemulsions with other possible applications as a drug carrier system.