Essential oils are volatile plant extracts that are highly concentrated. They are obtained through various extraction methods such as steam distillation. The method used depends on the plant. For example, citrus oils are extracted from the rind, whereas rose oil is extracted from the petals. They are extremely potent and must be handled and used with care. A few drops go a long way. Essential oils should always be diluted before applying to the skin. For proper usage please consult an aromatherapist or use at your discretion.