You absorb 6 to 100 times more chlorine in a shower than you do by drinking the same water. For almost 100 years, chlorine has been added to disinfect our municipal water supply. The level of chlorine in your area depends on the quality of your water supply, but even if there�s no noticeable smell, the chlorine may still be present. Chlorine absorbed in the shower dries the skin, decolorizes and causes brittle hair, causes eye irritation and inhaling chlorine vapors can cause an allergic reaction. This shower filter is easy to use and install. You can feel secure knowing your water has been made safe from contaminants, such as chlorine, and toxic irritants such as lead and iron.