Polymer capsules are tiny, often spherical structures made from synthetic or natural polymers. They are designed to encapsulate various substances, such as drugs, nutrients, or flavors, protecting them from degradation and controlling their release. This technology is widely used in pharmaceuticals, food, and cosmetics to enhance product stability and effectiveness. These capsules can be engineered to dissolve at specific rates or under certain conditions, allowing for targeted delivery. For example, in medicine, polymer capsules can release medication directly into a specific area of the body, improving treatment outcomes while minimizing side effects.