These filters are designed for shower heads. These systems remove sediment and/or chlorine removal. The main reason for installing a shower filter is for the removal of chlorine. Chlorine is toxic and can cause problems like dry skin, rashes, and affects the hair.These filters are also convenient for renters who are unable to install a point of entry (POE) system that would provide benefits while bathing. They are relatively inexpensive and easy to install and change.