Chlorine not only kills the bad bacteria that can make us sick, but it also kills good bacteria on which our our skin relies. According to Dr. Rona, M.D., chlorinated water destroys most of the intestinal flora–friendly bacteria that help not only with the digestion of food, but with the production of vitamins B12 and K. A press release announcing the result of findings reported by quickacneremedy.com on PRLog.org also notes chlorinated water also destroys vitamin E and polyunsaturated fatty acids. All of these factors have been shown to result in acne and other skin irritations, including eczema and rashes.