Phototoxicity: Essential Oil Safety Considerations
Essential oils are my heroes. I use them daily in a host of self-care products. As with all natural products, there are safety precautions to consider.

What is Phototoxicity
If you expose your skin to UV light after applying products containing certain essential oils, you can experience some skin irritation.
Phototoxicity, photosensitivity, photocontact dermatitis, or photoirritation are effectively the same thing and describe an inflammatory skin reaction when skin is exposed to the sun (UV light) after applying certain essential oils.
This irritation could cause permanent scarring because it’s essentially a chemically burn.
Symptoms of Photoxicity
This is not a complete list but if you experience any of these symptoms after applying a topical cream, ointment, or gel that contains essential oils, wash it off immediately. If the symptom worsens, seek medical help.
Reactions to photo irritants typically appear up to 24 hours after application.
Redness, a rash or blistering
Burning or itching
Skin discoloration
Inflammation
Scaly patches or raised skin
Which Oils Are the Culprits?
Irritation is caused by the presence of a naturally occurring group of substances in citrus plants called furanocoumarins. They react to UV light and irritate the skin.
Many (but not all) citrus essential oils will be phototoxic. Especially if they were derived using the cold-pressed extraction method.
This is an important point because the phototoxic properties of a particular oil may depend on how it was extracted or what was extracted from it.
Lime essential oil is a good example. The cold-pressed lime peel essential oil is phototoxic, but the steam distilled lime peel essential oil is not.
Bergamot essential oil is phototoxic but if the bergaptene (a member of the furanocoumarins group) is removed, it is not phototoxic.
Essential oils known to cause photosensitivity
Angelica Root
Bergamot Peel
Bitter Orange
Cumin Seed
Grapefruit Peel
Lemon Peel
Lime Peel
Mandarin Leaf
Rue Leaf
Citrus essential oils that do not cause photosensitivity.
Steam distilled lime
Red Mandarin
Sweet Orange
Tangerine
Blood Orange
Bergaptene free bergamot Peel
Use Phototoxic Essential Oils with Considerations
You can use photosensitive essential oils safely with some considerations.
1. After applying a topical skin product that contains a phototoxic essential oil, avoid direct sun exposure, tanning beds, or UV light in general for at least 12 to 18 hours.
2. If you are going into the sun, cover your skin.
3. However, if it’s a product that is applied and then washed off such as shampoo or a bath product, you are generally safer.
4. If you use essential oils in a steamer or sauna, some of the oil particles will remain on the skin. Consider showering afterward to remove the oils topically or stay away from UV light.
5. If you experience any skin irritation, dip a cloth in whole milk and lay the cloth on the irritated skin. The high fat and protein concentration in whole milk will soothe the burn and promote healing.
Respect Nature
I still love all my essential oils. I respect them for their holistic healing offerings. They are my daily heroes, from rosemary that fights my morning brain fog to lemongrass that soothes my achy joints.
Poison Control Contact
United States
(If you or someone you know may have been exposed to a dangerous substance, contact poison control immediately at 1–800–222–1222 or go to poisonhelp.org for assistance.)
Thank you
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Adapted from my article on Remedy Grove
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Sources
Wilson, Celeste. Isla Verde Spa Training Academy Certificate of Aromatherapy Course.
Wilson, Celeste. National Higher Certificate in Beauty Therapy. The Durban University of Technology.
National Cancer Institute
https://www.cancer.gov/publications/dictionaries/cancer-terms/def/phototoxicity
Aromahead Institute
https://blog.aromahead.com/2010/03/22/citrus-essential-oils-avoiding-phototoxicity






