Post-Inflammatory Erythema (PIE): Treating After-Acne Red Spots

Pink, red, or purple post-acne lesions are technically called post-inflammatory (or post-acne) erythema — aka PIE. With the help of Sandra Lee, MD (aka Dr. Pimple Popper), we explain what causes PIE, how it's different from hyperpigmentation (PIH), and what you can do to treat and prevent post-inflammatory erythema.
The name might not be familiar — but those frustrating pink spots that appear post-acne probably are. Here's what do.

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having PIE aka post inflammatory erythema can feel SO DEFEATING

Post Inflammatory Erythema The red pigment that gets left behind

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Easy as PIE (Postinflammatory Erythema).

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