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    This Disposable Razor Hack Is Going To Save You So Much Money

    I can't believe it either.

    So you know these razors? The ones with the replacement blades that cost an OBSCENE amount of money?

    Well I'm about to save you all of that obscene money.

    Warner Bros. Television / Via

    Next time you shave, take your razor back to your room.

    Find a pair of jeans -- any pair, it doesn't matter if they're old or new. Make the jean leg straight and flat, either by putting it on a table or your bed.

    Now take your razor and "shave" your pants leg.

    20 times in one direction, and then another 20 times in the other direction. I promise: It won't ruin your jeans.

    Just like this guy here.

    View this video on YouTube

    You can do it on any piece of jean, really.

    According to Lifehacker, "The threads of the jeans run in a diagonal so switching directions allows for a balanced approach to fine tuning the blade's edge."

    Barbers have been doing this for years with leather straps.

    View this video on YouTube

    But jeans do the job just as well. You should also make sure that your razor is completely dry after using it, which prevents oxidization and thus extends the life of the blade.

    With this method, you can use a single blade for up to six months — which means an 8-pack of blades, which usually costs around $20, could potentially last you FOUR YEARS.

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    I know. It's amazing.

    MTV / Via