Book excerpt: Aromatherapy is increasingly incorporated into midwifery practice, particularly in midwife-led units. It is the most commonly used therapy by midwives and birthing practitioners but access to up-to-date safety information is limited. Almost 90% of women may be using complementary therapies during pregnancy and birth and so it is very important that midwives are aware of safe and appropriate use based on contemporary evidence. This book covers safety, effectiveness, evidence, benefits and risks, and legal, ethical and professional issues related to incorporating aromatherapy into maternity care. Useful charts and tables are included for quick reference in clinical practice, making this is the ultimate handbook for using aromatherapy in midwifery practice. The scientific basis behind aromatherapy, including relevant anatomy and physiology, chemistry and pharmacology are covered, as well as a critical appraisal of the contemporary research evidence supporting the use of aromatherapy in maternity care. Essential oil profiles of the oils that can be safely used in pregnancy, birth and postnatally are also included.