The oil you're referring to is likely "Azadirachta indica," commonly known as neem oil. Neem oil is a natural oil extracted from the fruits and seeds of the neem tree. It is often used as a complementary or alternative treatment due to its antifungal, anti-inflammatory, and antibacterial properties. Neem oil may be beneficial in wound healing, soothing eczema, relieving diaper rash, and acting as a disinfectant.