Homedepot …sells a shower head unit…$30-40 & ..3pack filter replacement can’t recall $price (removes Most not 100%) easy to install… only problem for us … filter plugs up quickly..low…very low water flow…even the first shower …

A wombat post form yesteryear --to see if you have fluoride:
http://curezone.com/forums/fm.asp?i=1200754#I

>> "Do I expose myself to fluoride because of that or it won't hurt through skin?" <<

Yes, you expose yourself if your water is fluoridated.

There are shower filters that can reduce the fluoride about 50% or so... though not entirely.

Your unasked question answered...

Is it harmful?

That depends on whether you have a strong, balanced, terrain (mineral nutritional profile).

That said, repeated exposure over time, without attention to excellent nutrition (junk food diet) can degrade your "terrain" and lead to illness.

grz-