What components make up the acid mantle of the skin?

The acid mantle of the skin is a thin film that provides a protective barrier, crucial for maintaining skin health and preventing infections. It is primarily composed of sebum, which is an oily substance produced by sebaceous glands; lipids, which include fatty acids that contribute to the barrier function; sweat, which helps maintain hydration and contributes to the skin's pH; and water, which is essential for skin hydration and elasticity.

This combination of sebum and lipids helps reduce transepidermal water loss, while the sweat creates a slightly acidic environment that can inhibit the growth of harmful microorganisms. The correct answer encapsulates all these important components that form the acid mantle, emphasizing its role in the skin's defense mechanism.