Which statement best describes the function of the skin's hydrolipidic film and how products can support or disrupt it?

• A. Harsh cleansers disrupt the film; barrier-supporting products (ceramides, fatty acids) help; avoid irritants that strip lipids.
• B. The film has no role in moisture retention or barrier protection.
• C. It only affects tanning; not skincare.
• D. It is impermeable to water and unaffected by products.

Answer: (B)

The hydrolipidic film is a thin protective layer on the skin’s surface made up of water and lipids. It acts as a moisture barrier, helping to lock in hydration, while also shielding the skin from irritants and environmental stressors. When this film is intact, the skin resists dryness and sensitivity; when harsh cleansers or irritants strip away lipids, the barrier weakens, leading to increased water loss and reactivity.

Products can support the film by replenishing its lipids and reinforcing the barrier. Ingredients like ceramides, fatty acids, and cholesterol help rebuild the protective layer, improving moisture retention and resilience. Using mild cleansers and formulations that avoid irritants and strong surfactants minimizes disruption to the film, preserving its function.

In contrast, statements that claim the film has no role in moisture retention or barrier protection, that it only affects tanning, or that it is impermeable to water and unaffected by products don’t reflect how the skin barrier works or how skincare acts on it.