Blister packs are a type of packaging commonly used for pharmaceuticals, vitamins, and small consumer products. They consist of a pre-formed plastic shell that holds individual doses, typically sealed with a backing material like aluminum or paper. This design protects the contents from moisture, light, and contamination, ensuring product safety and longevity. These packs are user-friendly, allowing consumers to easily push out the desired dose without needing additional tools. Blister packs are often found in over-the-counter medications, such as aspirin or cold remedies, making them a familiar sight in many households.