Dr. Abigail Waldman, a dermatologist and Harvard Assistant Professor, took to Instagram to share a 'disturbing' warning, ...

post-pimple pop and with an acne scab to show for it. Your first thought might be to break out the concealer and full-coverage foundation, but alas, this won't mask or get rid of acne scabbing.

There are many different types of acne. There's the hormonal kind, which tends to pop up around menstruation, breakouts due to PCOS, and nodular acne, with its deep, painful pimples. No matter ...