Why do particular metals (not sure which kind) found in some jewelry/sunglasses sometimes cause a rash or reaction on your skin?
In: Chemistry
Im thinking you may be thinking about nickel. My cousin has some skin irritation with too much nickel in their diet. A quick search shows that nickel accessories, like zippers, glasses, and jewelry, causes allergies. Just from a basic search, it seems like no one has found exactly why this happens.
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