How does the zinc in this ointment work on my skin?

The primary active ingredient is zinc oxide. In skincare, zinc oxide is known for two main functions when applied topically. First, it forms a physical, occlusive barrier on the skin's surface. This barrier helps protect the treated area from external irritants, friction, and chafing, which can allow the skin underneath to recover in a calmer environment. Second, it offers a mild drying or astringent effect, which can be helpful for slightly moist or weepy areas of irritation.

In this particular formula, the zinc oxide is buffered by emollient ingredients like petrolatum and mineral oil. This blending is important because it prevents the zinc from being excessively drying, making the ointment suitable for delicate or sensitive skin that is already compromised. The overall composition aims to shield the skin and reduce moisture loss from the treated spot, without creating an overly tight or uncomfortable feeling.