Nail oil is hazardous waste. Nail oil contains some harmful substances like acetone, which may have some negative effects. These chemicals enhance nail oil's stiffness, wear resistance, and shine. But as nail oil dries, these substances are released into the air and can cause headaches. Using nail polish can also lead to contact dermatitis, a condition caused by skin allergies. Therefore, nail oil is hazardous garbage. Please put it into the red hazardous garbage container when discarding.