How does circe turn humans into animals?

In mythology, Circe, a powerful sorceress from Homer's "Odyssey," transforms humans into animals using magic potions and spells. She often employs a special herb, "moly," to enhance her powers and control over transformation. By mixing these elements, she can alter the physical forms of her victims, reflecting their inner natures or flaws, thus turning them into creatures like swine or wolves. This transformation serves as a narrative device to explore themes of power, identity, and the consequences of human behavior.