A skin condition where keratin and sebum block the pore, bacteria multiply and inflammation follows.
A comedone that can be extracted and a lesion still inflamed underneath need different handling. Squeezing a red, firm lesion can drive the inflammation deeper and leave a mark or a scar.
What remains after inflammation settles falls into three groups: red marks, brown pigmentation, and an actual depression. The first two are colour; the third is structure, and they are approached differently.
