The greater the number of drops needed to make a stable lather, the harder the water. To separate temporary and permanent hard water samples, boil the water. Repeat steps two and three with the ...

Those looking for a natural shampoo that works well on curly and textured hair are in luck: using phytic acid, a naturally ...

Specifically, I wanted to test the claim that it "helps prevent hard water stains, soap scum, and grime build up" on glass.