Which product is not typically used as a moisture barrier?

Moisture barriers are substances designed to protect skin from moisture, which can help prevent skin breakdown, particularly in patients with incontinence or skin that is prone to maceration. Among the choices listed, alcohol is not typically used as a moisture barrier.

Alcohol is a drying agent that can actually exacerbate skin irritations and dryness when applied. In wound and skin care, it's used primarily as an antiseptic or astringent, which helps in cleaning wounds rather than providing a protective barrier against moisture.

In contrast, products like petrolatum, zinc oxide, and dimethicone are effective moisture barriers. Petrolatum provides a thick, occlusive layer that protects the skin from moisture. Zinc oxide is well-known for its protective properties and is commonly used in products for preventing diaper rash. Dimethicone is a silicone-based compound that forms a protective layer over the skin, helping to maintain moisture balance while preventing further irritation. These products help maintain the integrity of the skin by creating a barrier against moisture and irritants.