Castor oil has been used for centuries as a natural remedy for various health concerns. Applying castor oil to the belly button, an ancient practice rooted in Ayurvedic and traditional medicine, is said to offer numerous benefits, from improved digestion to hormonal balance. However, while this practice has gained popularity in recent years, it's important to understand both the potential advantages and side effects. In this article, we’ll explore what castor oil in the belly button does and discuss the possible side effects.