The combination of sweat and sebum that provides the skin's protective coating.
protective barrier made up of a mixture of sweat and sebum that defends skin against environmental factors, microorganisms, maintains moisture and provides a soft appearance; hydro-lipidic film
An acid cloak, or surface, which covers the skin, scalp, and hair. This natural protective feature normally has a pH of about 5.5.
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. These contaminants and other chemicals are primarily alkaline in nature and the skin's moderate acidity helps to neutralize their chemical effects.