1. a South American tree whose bark contains saponins used for soap and cleaning
Usage: botanical

Examples

• The quillai tree is native to Chile and Peru.
• Indigenous peoples have used quillai bark for washing clothes for centuries.
• Quillai extract is still used in some natural cleaning products today.
• The saponins in quillai bark create a natural lather when mixed with water.
• Commercial soap manufacturers sometimes incorporate quillai as a natural ingredient.