A patient who ingested large quantities of celery soup eaten before UV irradiation has been reported suffered for severe sunburn. Bergamot oil (citrus bergamia) in eau de cologne had been described to cause hyperpigmented lesions. A woman burned her one arm and leg after a 20-minute session on a sunbed, taken immediately after a sauna with lemon oil. All the issues reported above are the side effects and contra-indication when using plants and essential oils. One of the safety consideration as mentioned in my previously article Essential Oils Safety and Toxicity is phototoxicity . Today, we are going to delve further into this. What is Phototoxicity? Phototoxicity is a form of photosensitivity that is not depended on immunologic response. It is the result of direct cellular damage caused by the reaction between photoactive agents and sunlight or ultraviolet (UV) light at the same time . This means, without the exposure to UV light, the ...