9 Things You Should Never Use On A Pimple, According To Dermatologists

7-Toothpaste will do more harm than good.

It’s one of the oldest tricks in the books: Put some toothpaste on your zit, and it will be dried up by the morning. But Susan Bard, a New York-based dermatologist, told INSIDER that using toothpaste on your blemish can end up making things worse. “It can cause an irritation or allergic contact dermatitis,” she said. Allergic contact dermatitis is an allergic reaction to a product that usually results in a red, itchy rash.

To avoid all that, Bard recommended using an over-the-counter acne spot treatment. “But apply a tiny bit no more than once or twice a day. More can lead to skin breakdown, ultimately increasing healing time,” she added.

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