Sapindus is a genus of flowering plants in the family Sapindaceae, commonly known as soapberries. These plants are native to tropical and subtropical regions around the world. The most well-known species, Sapindus saponaria, produces fruit that contains natural saponins, which can create a lather when mixed with water, making them useful as a natural soap alternative. The fruit of Sapindus is typically round and can vary in size and color, ranging from yellow to black. In addition to their cleaning properties, these plants are also used in traditional medicine and as a natural insect repellent. Their ecological role includes providing habitat and food for various wildlife species.