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Posts tagged "Patch Testing"

A patch test is a small trial of a product on a small area of skin before you use it more widely. The articles under this tag explain how to do one for skincare, for hair dye and for hair removal cream, how long to wait, and what redness, itching or swelling means. A home patch test reduces the risk of a bad reaction. It does not replace allergy testing by a dermatologist.

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