I have a friend who used to have the same problem with her heiny. She was wearing clothing that was really tight across her behind (she had a great behind, so I can't blame her) when she started wearing loose skirts it went away. You might try loose clothing, at least for a little while.

I used to get similar problems with the blackheads that came in under my eyes. My Mary Kay lady reassured me that there was no way to get zits under your eye--there were no oil glands. She admitted that she was wrong when she saw my blackheads that wouldn't even pop.

Herbal treatments that worked for me: Washing the area with an exfoliating scrub at least twice a day. Apricot or walnut is what I use. Then apply witch hazel, and a nice oil-free lotion.

I would make sure it dries completely before you put on clothing afterwards, so you don't irritate the moist skin with cloth rubbing against it.

But I am by no means an expert. Hopefully someone with more experience can chime in.

jaimemarcos16.... did you ever figure out how to get the blackheads off your stomach?