Allergic reaction, contact sensitization, and photosensitivity
Allergic reaction
An allergic reaction may be possible with any oil, particularly if used in high concentrations. If redness, bumps, swelling, itching or pain develop, stop using the oil and wash the area immediately with an unperfumed soap and water. If used as recommended, you greatly decrease the chances of having an allergic reaction to any of our mixes.
Contact sensitization (delayed allergic reaction)
Some oils do not produce any irritation on the first application but may on subsequent contact, causing a localized allergic reaction. Commonly used oils that are best avoided include Cassia, Cinnamon bark, Bitter Fennel, and Verbena. None of these oils are used in our mixes. However, an allergic reaction may be possible with any oil, particularly if used in high concentrations.
Photosensitivity
This occurs when the essential oil rubbed on the skin reacts to sunlight, causing redness, darkening of the skin, and perhaps blistering. Verbena oil is highly photo-toxic and should never be used on the skin. Bergamot, Cumin, Lime, Lemon, Grapefruit, all Orange oils, Petitgrain, Mandarin, and Angelica root are oils that are photosensitive. They should not be used on the skin except in very dilute form. Minimize sun exposure for several hours following application of diluted oils.
To test for possible skin irritation: Apply the essential oil or mix at double the concentration you plan to use. Use two drops of the oil on the inside of your forearm. Cover with a band-aid and leave for 48 hours.
To test for allergic contact sensitization: Repeat the above instructions at least a second time.
If you experience irritation or allergic sensitization, you may see redness, itching, and/or swelling at the patch test site. Wash the skin with unperfumed soap and expose the skin to air. Discontinue use of the mix or oil.