Liposomes are tiny spherical structures made up of lipid (fat) molecules. They can encapsulate drugs or other substances, making them useful for delivering medications directly to specific cells in the body. This targeted delivery can enhance the effectiveness of treatments while minimizing side effects. These structures are often used in pharmaceuticals and cosmetics. In medicine, liposomes can improve the absorption of certain drugs, such as chemotherapy agents, by protecting them from degradation. In cosmetics, they help deliver active ingredients more effectively to the skin, enhancing the overall efficacy of products.