Question: what essential oils are safe to diffuse while pregnant?
Answer: Additionally, the National Association of Holistic Aromatherapy (NAHA) says benzoin, bergamot, black pepper, cypress, eucalyptus, frankincense, geranium, ginger, grapefruit, mandarin, neroli, petitgrain, rose, sandalwood, orange (sweet), and tea tree "appear to be safe during pregnancy" when properly diluted.