Although essential oils are natural and safe used correctly, they are powerful and, in some cases, should be used with caution. One example of this is the list of essential oils that is known to cause a reaction called phototoxicity.
Phototoxicity happens when chemical elements in essential oils (or other substances) bind to the DNA in the skin and react when they are exposed to UV light. This can lead to phototoxic burns which can appear up to 24 hours after being out in sunlight or using a tanning bed.
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