Onion Seed oil also known as Allium Cepa comes from the Onion Plant; the onion seed oil is cold pressed from the seeds of the onion flower. This oil is used in skin and hair care products. The oil is good for the skin. It is also good for hair care. Botanical Name: Allium Cepa Mode of Extraction:- Cold Pressed Packing in Amber Glass Bottle or Aluminum Bottle. FOR EXTERNAL USE ONLY