In the context of cancer treatment, micelles can be used as drug delivery vehicles. The hydrophobic core of the micelle can encapsulate hydrophobic anti-cancer drugs, improving their solubility and stability. This encapsulation allows for targeted delivery of the drugs to cancer cells, minimizing damage to healthy cells and reducing side effects. Once the micelles reach the tumor site, their structure can disassemble, releasing the encapsulated drugs directly to the cancer cells.