Organic Ziziphus (Qasil) Powder. Organic Ziziphus Leaf Powder Facemask (Qasil). This is our Ziziphus leaves powder mask also widely known as Qasil in Somalia (East Africa). Ziziphus leaves powder has antibacterial and antifungal properties, anti-inflammatory, and antioxidant properties, including betulinic acid, various flavonoids, saponins, tannins, and triterpenes.