The acid mantle is a very fine, slightly acidic film on the surface of the skin acting as a barrier to bacteria, viruses and other potential contaminants that might penetrate the skin. It is secreted by sebaceous glands. The pH of the skin is between 4.5 and 6.2, so it is acidic. These contaminants and other chemicals are primarily alkaline in nature and the skin's moderate acidity helps to neutralize their chemical effects.
- Monika-Hildegard Schmid-Wendtner; Korting Schmid-Wendtner (2007). Ph and Skin Care. ABW Wissenschaftsverlag. pp. 31–. ISBN 978-3-936072-64-8. Retrieved 19 June 2012.
- Zlotogorski A (1987). "Distribution of skin surface pH on the forehead and cheek of adults". Arch. Dermatol. Res. 279 (6): 398–401. PMID 3674963.
- Schmid MH, Korting HC (1995). "The concept of the acid mantle of the skin: its relevance for the choice of skin cleansers". Dermatology (Basel) 191 (4): 276–80. PMID 8573921.
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