Liposomes are tiny spherical structures made up of lipid (fat) molecules. They can encapsulate drugs, nutrients, or other substances, making them useful for delivering these materials directly to specific cells in the body. This delivery method can enhance the effectiveness of treatments while reducing side effects. These structures are often used in pharmaceuticals and cosmetics. For example, liposomal formulations can improve the absorption of vitamins and medications, allowing for better therapeutic outcomes. Researchers are continually exploring new applications for liposomes in areas like gene therapy and vaccines, highlighting their versatility in modern science.