Yucca Extract Average Plant extracts Soothing Yucca Extract description Plant extract native to Mexico that can have skin-soothing benefits; however, its saponin content (believed to be the active part of the plant) can be sensitising. Like most plant extracts, yucca also functions as an antioxidant. Related ingredients: Yucca Schidigera Yucca Schidigera Leaf/Root/Stem Extract