http://chlorineshowerfilter.net/shower-water-filter/ Your entire body is affected by showering in chlorinated water, and these effects accumulate over time. They can be insidious, so you do not even realize what is happening until later. A shower water filter helps you avoid these health problems.
Finally, someone brave enough to point out Fluorine being the most dangerous.
LendMeYourHand 11 months ago