Beauty products can amass in your home for a billion different reasons — gift with purchase, sample boxes, party favors, mailings — you get the idea, it's hitting you from all angles. And that's hardly something to complain about; I mean, who doesn't love a new lipstick or dry shampoo? But it's easy to forget you even have those things when the flood of products continues to accumulate and build up to a mountain of clutter right under your nose. That's where the purge comes into play. It's never easy parting with what could maybe one day be something you possibly think about trying (see what we did there?), so we enlisted the help of organizational geniuses Julie Morgenstern and Barbara Reich to get their best tips for getting the job done. Here are the 10 commandments to live by when purging your beauty stash.