shower filters r pretty cool, but idk how much they really help... i mean, yeah, they can reduce chlorine and minerals, which is def a plus, but what's the point if u still gotta deal w/ hard water? it's like trying to put a bandaid on a bullet wound lol. anyway, i guess if u wanna know, some of the ones reviewed were pretty decent... weddell duo was one of them, and aquasana shower filter was another. just don't expect it 2 make ur hair super silky or anything 