Review on Modern Masters AM203-04 Metal Effects Primer, 4-Oz by Patrick Keita

I used this bronze effect primer to paint a garden trellis. That looks great! (rust base photo added) I can only assume that people who give this one star and say it 'doesn't do anything' don't understand what this particular product is. This is a primer that goes under color changing (oxidizing) paint. The primer does not discolor (oxidize). This is the meaning of the primer - to block the oxidation of the upper layer, which falls on the base below.