There's the hormonal kind, which tends to pop ... blackheads, and other pimples that are caused by dead skin cells clogging our pores. But for those deep acne breakouts, such as cystic or nodular ...

or acne cysts (deep, pus-filled lesions that look similar to boils). Popping pimples can cause more than a swollen spot or a scab; it is a surefire way to increase your chances of developing acne ...