What are essential oils?
Essential oils are concentrated extracts taken from the roots, leaves, seeds, or blossoms of plants. Each contains its own mix of active ingredients, and this mix determines what the oil is used for. Some oils are used to promote physical healing — for example, to treat swelling or fungal infections. Others are used for their emotional value — they may enhance relaxation or make a room smell pleasant. Orange blossom oil, for example, contains a large amount of an active ingredient that is thought to be calming.