Maybe you should moisturize lips with bottled water instead of tap water to avoid getting fluoride and chlorine on lips. But then again, you will get tap water on lips when you brush your teeth (unless you use bottled water) or take a shower (unless you get a shower filter). Just saying this in case some people have higher levels of fluoride and chlorine in their area. There is a doctor in my area who kept getting allergic reactions to tap water. I should ask him how he found out it was the water.