Questions people ask
Will a shower filter soften hard water?
No. Doug Anderson of Culligan tells NBC Select that shower filters can't soften hard water; they're designed to reduce impurities. He recommends looking for filters checked against NSF 177, with third-party data behind them.
How do I know if I have hard water?
Deon Marecheau, a Thumbtack pro, lists scale and filmy skin or hair among the common signs in NBC Select's guide. For a real answer, Doug Anderson advises a test from an EPA-registered lab, because at-home kits can't give in-depth information and are prone to user error.
How often should I use clarifying shampoo?
Experts in NBC Select's guide say about once a week, not daily, since overuse can strip natural oils and cause dryness and breakage. Follow it with conditioner or a mask. They also advise avoiding it if you have psoriasis or dandruff.
How often do filters need replacing?
It depends on the model. NBC Select lists 90 days for the Jolie and Canopy, while Bob Vila says the AquaBliss cartridges last up to 6 months and hard water wears them out faster. Deon Marecheau tells NBC Select that filters can slightly reduce water pressure and fill with debris as you use them, so change them as often as the brand recommends.