You're best off buying drugstore products at certain chains with 100% guaranteed return policies — meaning you can return opened beauty products if they're, say, the wrong foundation shade.

CVS and Rite Aid have 100% guarantee policies. Check with a drugstore before you purchase so you don't waste your hard-earned ca$h money.

CVS / Augusta Falletta / Via BuzzFEed

Or, if you're trying out tester foundation shades at a beauty counter, apply the shade to your neck instead of your arm for the most accurate match.