Which reaction involving UV light exposure is associated with compounds like limonene found in kaffir lime essential oil?
Answer
Phototoxicity
Phototoxicity is the specific adverse skin reaction linked to topical application of certain citrus products, especially essential oils rich in compounds like limonene and linalool derived from kaffir lime. This reaction occurs when the skin, which has been exposed to the oil, is subsequently exposed to ultraviolet (UV) light, such as sunlight. The resulting condition manifests as a severe skin reaction that can include intense redness, inflammation, or even blistering. It is crucial to distinguish this risk, which applies to topical application of concentrated oils, from the risks associated with the internal ingestion of the juice, which primarily concerns acidity.

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