Bitter orange essential oil (Citrus aurantium) generally has the same benefits and uses as sweet orange oil, though some sources indicate bitter orange may have a stronger effect.
Bitter oranges are smaller and darker than sweet oranges. The bitter orange tree also gives us two other oils: petitgrain, distilled from the leaves, twigs, and sometimes immature fruit, and neroli oil, distilled from the flowers.
Plant family: Rutaceae
Production: Mechanically expressed from the peel.
Aroma: A cross between the sweetness of sweet orange and the slight bitterness of grapefruit. The aroma has a dry citrus note compared to the sweet note of sweet orange oil.
Perfume/Aromatic note: Top
Is bitter orange safe to use during pregnancy? Maybe. Consult a professional. IFPA Guidelines indicate the oil may help relieve water retention.
Is bitter orange essential oil safe for children? Yes, though you may want to avoid use with babies. Consult a professional.
Cautions: Bitter orange oil has a low risk of photosensitivity as long as the dilution for skin use is no more than 1.25%. If the oil becomes oxidized, it can cause skin sensitivity.
The Encyclopedia of Essential Oils (updated edition) specifies the same uses for bitter and sweet orange: Dull and oily complexion, mouth ulcers, fat loss, water retention, constipation, indigestion, digestive spasms, colds, flu, respiratory support, nervous tension, and stress-related conditions.
375 Essential Oils and Hydrosols: Bitter orange is calming and sedating. It's useful for relieving anxiety and vertigo.
Subtle Aromatherapy: Bitter orange "nourishes the soul, feeding it with feelings of joy."
Essential Oils: A Handbook for Aromatherapy Practice: Bitter orange supports digestion while promoting a feeling of well-being. This essential oil is useful for the solar plexus (third) chakra and is especially noted for relaxing effects and ability to promote cheerful feelings and counteract feelings of anger and frustration. Suggested oils to blend with bitter orange:
Quinessence Aromatherapy: Use bitter orange in massage blends to help relieve poor digestion, constipation, and liver congestion. This essential oil is cleansing, stimulating, and toning and may help reduce edema, cellulite, and varicose veins. The oil uplifts and energizes the body, while calming the mind and emotions.
New Directions Aromatics: Bitter orange is uplifting, balances skin moisture and oiliness, helps reduce oily skin and clogged pores, and helps relieve constipation, diarrhea, flatulence, stomach cramps, and cold and flu symptoms.
The Complete Guide to Clinical Aromatherapy: Bitter orange essential oil is uplifting and useful for relieving sluggish digestion, dull-looking complexions, and mouth issues such as sore gums and ulcers.