I won’t pretend to understand how this stuff works but I am convinced that it does. We repainted an interior bathroom with this Activa paint. It is a windowless, interior space and though it does have a vent fan, it can get quite stale. Not awful but enough to notice. We thinned the paint slightly as recommended on the package and it went on the walls about like any other paint. Coverage of the old dark color was surprisingly good. Now, a month later, the staleness has not reappeared. Being an interior space that does not get any natural light, we leave a lower power LED on for a couple of hours a day to aid the process per the instructions. Being no chemist, I can’t tell you how it works but it actually does. The only negative to report was that a slight amount leaked out of the plastic can during shipping but the tub is wrapped in a plastic bag so none escaped the packaging.