YEOUTH firmly believes in telling our customers the truth about our products. Each shipment of oils is tested using a gas chromatograph to ensure purity. The oils are never diluted or altered in any way. We invite you to experience the difference of true purity for yourself with YEOUTH Essential Oils. Essential oils are all-natural liquids that have been extracted from plants and expressed or distilled to preserve their natural properties. These aromatic oils are found in the seeds stems roots flowers and other parts of plants. They are powerfully fragrant because of their high concentration. Essential oils usually give off a fragrance that is characteristic of the plant or source they were derived from.