What is the slightly acidic film protecting the skin from contaminants?

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Multiple Choice

What is the slightly acidic film protecting the skin from contaminants?

The acid mantle is the slightly acidic film that sits on the skin’s surface and acts as a primary defense against contaminants. It forms from the mixture of sweat and sebum with surface oils and minerals, creating a mild acidity (roughly pH 4.5–5.5) that helps inhibit many bacteria and supports the skin’s barrier function. This protective environment also helps minimize water loss from the skin. Harsh cleansers or alkaline products can disrupt this film, making skin more susceptible to irritation and infection. The other features mentioned aren’t this surface film: the stratum corneum is the outermost layer of dead skin cells; the epidermis is the entire top skin layer; the dermis lies beneath.

The acid mantle is the slightly acidic film that sits on the skin’s surface and acts as a primary defense against contaminants. It forms from the mixture of sweat and sebum with surface oils and minerals, creating a mild acidity (roughly pH 4.5–5.5) that helps inhibit many bacteria and supports the skin’s barrier function. This protective environment also helps minimize water loss from the skin. Harsh cleansers or alkaline products can disrupt this film, making skin more susceptible to irritation and infection. The other features mentioned aren’t this surface film: the stratum corneum is the outermost layer of dead skin cells; the epidermis is the entire top skin layer; the dermis lies beneath.

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