Castor oil’s topical application to the belly button, a traditional practice, claims to draw toxins and promote well-being. However, research on its efficacy is limited. The duration of application varies depending on the intended purpose and individual sensitivity. It is generally recommended to start with short sessions (5-15 minutes) and gradually increase the duration if well-tolerated. It’s crucial to monitor skin reactions and discontinue use if irritation or discomfort occurs.