UPDATE** Ok so its been HARDLY 2 months and my hair came back to being super dry and tangled like a whole big dreadlock, the filter lost ALL its properties in less than 2 months!! And my household is JUST MY HUSBAND AND ME, and we only take 5 minutes to shower! So what about bigger households with kids or more than 2 people?? I went back to spending 30 minuts or more detangling and my hair started to fall off again like crazy, I can see the efect on the filter is gone so I am sad it doesnt last what it promises it's supposed to last which is 6 months! So are we supposed to buy this every 2 months? If it was cheaper I would think about it but it is NOT. So sad because I really loved it and took the time to write the most large review I have written in my whole life. *** I just bought my 3rd replacement for this filter and I can say with all honesty all of them (the same replacement, this is the 3rd one already) lasted hardly 2 months, in less than two months my hair comes back to dreadlocks and breaks with white spots on the ends. Very sad it’s SO expensive for less than 2 months while being advertised as 6 months! The product does work the first 2 months as My hair immediately looks softer, detangled and the shedding stops a lot but after 2 months I can feel the hard water again and I don’t have a particularly hard water just the regular one in Chicago. And I repeat: it’s just me and my husband taking showers of 5 minutes each! If we had a bigger family or took longer showers we would be basically had filter for only 1 month. Very disappointed on the product they should make it WAY MORE AFFORDABLE SINCE IT DOESNT LAST EVEN HALF OF THE TIME FRAME THEY SAY. _____________________ OK so I have been waiting since I bought this filter to write my honest review and I want to be VERY HONEST AND SPECIFIC/DETAILED ABOUT IT: • I come from a city outside USA where we had nearly the best tap water there is, in my native country we have very large hair and until then I have never heard about hard water nor had any issue with it drying my skin and hair. • So that being said, since I moved to USA my hair (naturally very abundant and voluminous) started to fall off on bunches!! it was SCARY and within months I had 8x times less than what I had before, I tried every treatment, oils etc etc thinking that maybe I hadn't had the nutrients I needed on my scalp, but it never stoped and got worst, for the first time I had DANDRUFF in a very thick layer AND THE WORST started to happen, my hair started to TANGLE together in a big ball of dreadlocks like a rastafarian, it was sooo dry and it didnt matter how much conditioner, treatments I put on it, or how much I combed it, when I did it just broke off and on the next day it would be all tangled again. • SO THEN I started reading it was maybe because of the water, I realized it had never happened to me before and it maybe had something to do with it, so I bought TWO different filters from other brands and the 5 first showers I noticed a slight improvement but after that, my hair got worst like I was putting new harmful chemicals in addition on the ones that my hard water already had! Those two filters I bought on amazon, the first one was by a brand cold MXBOLD and the other one was AQUABLISS, I am not going to say those are bad, but they definatelly didnt work for me and my specific hard water, the Aquabliss was the one that got my problem worst and I was afraid I was going to get bold on that rithm of sheding, I even saw some white hard residues starting to form over the shower head that later I read it was because of the calcium/hard water plus the filter elements they put inside and I tought this might be forming on my head as well. • So then, I decided to buy this AQUASANA filter which I was doubting so much because of the price, but I am here to say that it was my best decision ever, from the very first shower my hair stoped shedding as it was doing before, like I used to shed more than 200 hairs on each shower and bunch of them each day, but with this filter it stopped! My scalp doesnt itch as much and MY HAIR STOPPED TANGLING LIKE RASTAS! That one for me was the most clear signal that the filter was working, my hair still tangles more than it does on my native country which has the best water but hey, at least it looks way more healthy and shiny that it has been since I came to USA, now people compliments me on my hair (something that didnt happen before) and I do feel better about it now for alllll the reasons I have wrote here. So if you are a woman or a man that like me is looking desperately for a GOOD filter that actually works because of your hair shedding to an extreme, I suggest trying this one (also taking biotin pills and taking a look at some vitamins you might be lacking, like iron for example: lack of iron makes the hair fall)