Reader: I see caffeine in so many beauty products now. I thought caffeine was bad for your body because it dehydrates you. Does it have skin benefits I didn't know about?
According to New Scientist magazine, 90% of North Americans consume some form of caffeine on a daily basis. Whether it's coffee, tea, soda, or an energy drink, most of us need at least a bit of a jolt to rev up in the morning or push through the mid-day slump.
Our liberal caffeine consumption has some negative effects....

