I'm loving this shower filter. I had been having issues with the well water where we just moved. My hair was so dull and with no shine, so hard to even comb my hair. I never had any trouble before. The quick inexpensive solution was to use some filter but I really didn't know have much faith. But am amazed that how well the product worked for me, every time after taking a shower, i see the clear difference! my hair is softer,shinier, and much easier to comb through. I'm so happy with the purchase...