In this chapter several strategies for enhancing skin penetration have been reviewed. Quite clearly, there are many occasions when the ability to increase the rate and extent of dermal and transdermal drug delivery would be beneficial to therapy. This is reflected in the considerable research effort in this area. In recent years, much of this effort has focused on the development of chemical penetration enhancers, the use of supersaturated systems, the use of vesicular systems, and physical methods, such as iontophoresis and ultrasound. Limitations of space have precluded a discussion of physical methods of enhancement. However, further and more extensive information on physical and chemical enhancement of skin penetration can be found (9-11,181-183).
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Rosacea and Eczema are two skin conditions that are fairly commonly found throughout the world. Each of them is characterized by different features, and can be both discomfiting as well as result in undesirable appearance features. In a nutshell, theyre problems that many would want to deal with.