Yeah, comedonal acne is often much harder to get rid of than inflamed acne. The antibiotics and wash don't really help comedonal acne. To get rid of it, you need to get your skin exfoliating on a regular basis and to use something that will help push out the impactions in your skin. Retinoids (such as Tazorac) are one of the prescription treatments that help with this. Taz is pretty strong - so you may get a lot of dryness and irritation at first, and retinoids can sometimes flare up comedones into inflamed pimples. Since you are already on an antibiotic, that may help reduce an initial acne flare. There are milder RX retinoids as well - Retin-A, Differin. There are also OTC versions that are not as potent, but do work well for some people. I use Vivant's Derm A Gel, which is an OTC treatment that contains vitamin A propionate and lactic acid. It works great on my skin.
I would not do microderm - it sometimes irritates the skin enough that the noninflamed acne flares up into inflamed acne. Regular chemical peels with extractions (done by someone with experience treating acne - not just any old day spa) can really help clear the skin. I still get them even though I have been mainly clear for the last year and a half.
Other topcial treatments than can help include salicylic or mandelic acid. Glycolic acid will help the skin exfoliate, which can help loosen acne impactions.
Realize that whatever treatment you try, it will take time for you to start seeing a difference, so don't give up if you don't get clear right away. Most treatments take at least 6-8 wks to start showing a difference. Read More At : ...