Why was the head of Medusa still working?

The head of Medusa continued to work due to its unique ability to petrify anyone who looked directly at it. In Greek mythology, even after Medusa was slain by Perseus, her head retained its power and was used as a weapon. Perseus employed it to turn enemies to stone during his adventures, highlighting its enduring potency beyond Medusa's life. Additionally, the head served as a protective charm, symbolizing both danger and defense.