Bsd Organics Korai Kizhangu/Cyperus Rotundus/ Nut Grass root benefits are: The paste of nut grass is used in treating skin conditions. Morning - Mix 5 gms. of powder in 100 ml water, Boil the content for few minutes. once the water gets warm, filter the content and drink it before food. Repeat the same for Evening Dosage after dinner.People Apply korai kizhangu to the skin for nourishing..