Sure, we've all been told that washing your hair with cold water can increase shine and retain more color from your dye job, but what about a more boozy take on this trick? Beer isn't the healthiest substance for the majority of your body, so rinsing your hair in it might sound strange, but some people absolutely swear by it. In fact, there are even beer spas opening across Europe in response to the growing trend. They insist that after your normal routine of utilizing shampoo and conditioner, if you pour a can or bottle of beer over your hair, leave it in for a few minutes, then rinse it out, you'll be left with a healthier scalp on shinier hair. Just be sure to completely wash it out—you don't want to walk around smelling like a frat boy, do you?