Address of Corresponding Author

Skin Pharmacol Physiol 2004;17:267-273 (DOI: 10.1159/000081111)

  Key Words

• Emulsifying agents
• Emulsions
• Micro-emulsions
• Liposomes
• Glycerol

  Abstract

Emulsifying agents in aqueous solution lead to dehydration of the horny layer of the epidermis and damage to the barrier. This is only partly true if emulsifying agents are constituents of emulsions. Water-in-oil (W/O) emulsions cause an improvement in the hydration of the horny layer and barrier function. In the case of an additional effect of wash solutions, a partial or complete abolition of the drying out and barrier-damaging effect of the wash solution results. Oil-in-water (O/W) emulsions without glycerol have no effect on the moisture of the horny layer or indeed increase it, but they lead to considerable damage to the barrier and irritation. In wash tests, they do not induce any protective effect. With micro-emulsions this is still more the case and, moreover, they can also lead to exsiccation. As a result of the addition of glycerol, the barrier-damaging effect can be abolished. Also in stress tests with wash solutions, the damage to the horny layer is reduced by glycerol-containing O/W emulsions. Whereas the penetration-promoting effect of O/W emulsions without glycerol is best, only W/O emulsions or glycerol-containing O/W emulsions are suitable for atopic dermatitis. A hydrating effect on the stratum corneum was also found in a propylene glycol ointment.

Copyright © 2004 S. Karger AG, Basel

  Author Contacts

Prof. M. Gloor
Dermatological Department of the City Hospital of Karlsruhe
Hans-Baldung-Grienweg 13
DE-76149 Karlsruhe (Germany)
Tel. +49 721 707 390, E-Mail mgloor@onlinehome.de

  Article Information

Received: February 19, 2004
Accepted after revision: July 22, 2004
Number of Print Pages : 7
Number of Figures : 0, Number of Tables : 0, Number of References : 40