An open comedo typically has a dark appearance ... This article will discuss types of comedones and the prevention and ...

It’s worth noting that there are two types of comedones: closed and open - both of which are easily distinguishable.

The balance of IL-1 , IL-1ra, and IL-1 receptor concentrations may mediate the formation of comedones in vivo. In support of this hypothesis, open comedones contain high enough concentrations of ...

And these differences are important for figuring out the right treatment. Blackheads, aka open comedones, get their name from the fact that they appear as a black spec on your skin. Blackheads ...