#7. Caffeine can be found in
People can purchase caffeine-infused bottled water, jelly beans, breath mints, peanut butter and chewing gum. There are even caffeinated bath soaps that supposedly help wake people up in the morning. Although caffeine can be absorbed through the skin, it’s doubtful this soap will improve alertness during the day. Caffeine has also been added to shampoos to purportedly thicken hair and stop hair loss, but there’s no good evidence that these pricey products can truly deliver results.