Quick Answer
The biggest shower filter myths: that they soften water (they do not — that is a softener's job), that more stages always means better (stage count is not a quality signal), and that they remove everything (media target specific substances). Trust validated specs and certifications, not slogans.
Problem
Shower filter marketing is full of inflated stage counts and 'removes 99%' claims that make comparison shopping impossible.
Product Recommendation
ZOOSHEN publishes media, connection, and validated specifications per system — no invented claims. See /compare/shower-filter-types for a grounded overview.