Humectants in moisturizers primarily do which of the following?

• A. Draw moisture to the skin
• B. Create a barrier
• C. Soothe irritation
• D. Exfoliate

Answer: (A)

Humectants act as moisture magnets. They attract water into the outer skin layer, pulling it from the deeper skin and, when humidity is high, from the air, which increases hydration and makes the surface feel softer and plumper. That’s why their primary role is to draw moisture to the skin. Creating a barrier is the job of occlusive ingredients like petrolatum or silicones, not humectants. Exfoliation involves removing dead skin cells, often with acids or physical action, which humectants do not do. And while keeping skin hydrated can help reduce irritation, the main action here is hydration, not soothing specifically. In very dry environments, humectants can pull water from deeper layers unless the product also includes an occlusive to lock the moisture in, which is why formulas often combine both types.