Abstract: A method for enhancing penetration of a therapeutic or prophylactic agent in a host in need of the topical administration thereof which comprises applying to the epithelium of the host, the agent and an effective amount of one or more penetration enhancing epithelial proton pump inhibitors.

Abstract: Disorders of the skin and mucous membrane that have a disrupted or dysfunctional epidermal barrier are treated or prevented by topical application of a formulation comprising certain of the three major epidermal lipid species or their structurally similar precursors, isomers, or analogs in certain proportion ranges. This invention utilizes the following lipid species in unique combinations of two or more components: cholesterol, an acylceramide, a ceramide, and essential and nonessential fatty acids. These combinations are effective both as moisturizing agents and agents for the restoration of barrier function. Some of these combinations are further enhanced by the addition of known moisturizers such as petrolatum and glycerine.

Abstract: Certain proteolipid humectant macromolecules; method of obtaining by isolating these from tissue of vertebrates or by culturing; use of such proteolipids to treat dry human skin; compositions containing such proteolipids; and method for analysis of proteolipid concentration.