The water journal
Science-backed reading on water, skin and hair.
What is actually in shower water, what it does to a skin barrier, and how to tell a real filter from a plastic tube with charcoal in it.
Chelation vs. filtration: why removing chlorine is only half the job
Almost every shower filter on the market is built to fight chlorine, and most of them do a fair job of it for a few weeks. Almost none of them touch hardness — the calcium and magnesium that coat your hair, block your products and leave film on the glass. Here is the difference between trapping a contaminant and neutralizing one.
Read article →Latest articles.
Hard water map: check your city’s hardness level
85% of American homes sit above 60 mg/L of calcium carbonate. Here is how to find your number, what counts as hard, and which regions are worst.
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Chlorine in shower water: how much are you actually absorbing?
A ten-minute hot shower can expose you to more chlorine than drinking eight glasses of the same tap water. Steam, open pores and surface area explain why.
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Does water pressure drop with a shower filter? Real test results
A well-built filter costs you 3 to 8% of flow, which nobody notices. A poorly built one chokes the spray. Chelate-X was designed to push pressure the other way.
Read article →Shower filter for hair loss: does it actually help?
A filter cannot cure androgenetic alopecia. It can remove the metals, chloramines and mineral film that push already-stressed follicles into shedding early.
Read article →How often should you replace your shower filter?
Most cartridges are spent in 2 to 3 months. Chelate-X runs about six months because of media volume, not marketing. Here is how to tell yours is done.
Read article →What does a shower filter remove? The complete list
Chlorine, chloramines, lead, mercury, iron, copper, PFAS, VOCs, sediment — and the one category almost every filter leaves untouched: hardness minerals.
Read article →Can shower water make perimenopause symptoms worse?
Falling estrogen thins the moisture barrier at the same time chlorine strips it. The two problems multiply instead of adding up.
Read article →PFAS in your shower water: should you be worried?
Drinking is the primary route, but hot showers add dermal contact and inhalation. What the current data supports, and what it does not.
Read article →KDF-55 vs calcium sulfite vs vitamin C: which media does what
None of them is universally better. They target different contaminants and fail in different ways. A useful filter stacks them in the right order.
Read article →Best filtered showerhead of 2026: what to actually compare
Stage count is marketing. Media volume, hot-water stability, hardness handling and flow rate are the four numbers that decide whether a filter works.
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Everything above comes down to one swap.
Chelate-X neutralizes hard water at the head. The Duo-20 System filters it twice. Five minutes, no tools, free shipping and a 90-day money-back guarantee on both.
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