Besides medications, what other common sources can trigger irritation or photosensitivity when exposed to sunlight?
Answer
Perfumes and certain skincare products
Topical substances applied to the skin can act as potent photosensitizers. Ingredients found in perfumes, various sunscreens (particularly those using older chemical filters), and some herbal remedies can react negatively when exposed to UV radiation. This interaction creates irritation or adverse skin reactions that might be mistaken for a broader medical condition, but are actually caused by the topical product reacting to sunlight.
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