Why is Green Titan photocatalyst treatment semi-permanent?
Although it is originally water-soluble, it dries quickly after application and becomes water-insoluble. It also becomes as hard as a 4H pencil in ten to fourteen days after application. It does not come off unless the surface is polished. Even a bathroom can be used immediately after application. Because titanium oxide is merely the catalyst and is not changed, its effect is semi-permanent except when walls and ceilings are repainted.
