FYI purifica worked great with the new clay scubber from TRC. I cut it %10/vol in a spray bottle and lightly sprayed the panels with my hose before i started claying. Some sections i done i started to see brownish color. From my reading of labocosmetica they stated this about the anti-limescale action of their iron remover Sidero:
" It is also the first iron remover capable of eliminating at the same time, in a single operation, even the residues of limestone. In fact, when there are mineral residues, its color changes from purple to dark green – bronze precisely to indicate the elimination of calcium residues. The product is inert on the bodywork , the bumpers and the plastic parts, restores to the protective applied previously its original beading effect. Thanks to an exclusive and extremely effective blend, SIDERO is able to dissolve stains of rust and, for this reason, it is also recommended for the world nautical. It is essential for the extraordinary cleaning internal rims before the protective treatment coating."
I`m thinking purifica as the same color changing chemical.
Anyhow, i was very impressed it made my car look freshly polished from a distance.
