Picking at the skin is one of the worst things someone with acne can do to their skin, because it:

• Delays healing: Acne lesions heal more slowly when they are picked.
• Causes physical irritation: Anything that physically irritates the skin may lead to more acne.
• Increases the chance of scarring: Dermatologists who specialize in acne scar revision often blame picking more for scarring than the acne itself.