If you have an itchy scalp, dandruff, or eczema, the chlorine that is found in tap water could be a huge irritant. When I lived in London to study in college, my skin started getting so itchy and irritated! I quickly bought a chlorine filter and it helped immensely. When I got back home to the states I bought another for my home shower and it also made a difference in my skin and hair. My hair was softer and way more manageable. This filter rids water of heavy metals that stain your bathtub, reduces chlorine by 90-95%, and lasts 6 months.