right now, i use clean & clear advantage's thing that claims to coverup and help get rid of pimples. i'm not sure about the part about clearing up my acne but it's pretty good as a concealer.

but it's 6 dollars and finishes pretty fast. so i was wondering what concealer is good to use and easy to find? like at walgreens or something.

LOreal TrueMatch works awesome. It wont clog your pores and really makes you skin look awesome.

Maybelline Pure Concealer stick, which is good for acne spots.
Same with L'oreal TruMatch, and Cover Girl concealers.
Maybelline and Physicians Formula also has some good ones.
Look for something with a yellow base, to cancel out the red in your spots.