i had them 2x. once when i was in third grade again when i was 25 yr old. i got them from my niece. i thought they were zits. i went and got a facial and when the facialist extracted them she was like i never saw green puss. the next day i found out my niece has chicken pox. i felt so bad for the facialist. no scars. just bad salon etiquette. (the facialist never caught them + she was pregnant)
