jolie THE FILTERED SHOWERHEAD filters chlorine and heavy metals and is clinically proven to reduce dryness, irritation, and hair shedding. Think of it as Step Zero — the essential start to a routine. The filtration is best-in-class. Using a proprietary blend of American-made KDF-55 and Calcium Sulfite, the filter far exceeds NSF-177 certifications, has been tested via multiple third-party labs, does not clog nor reduce pressure, and includes the most American-made KDF-55 vs. any other existing shower filter. Each showerhead includes easy installation guide, plumbers tape, and wrench.