The fluid trace that you observe is merely the carrier for the active ingredients. Personally, I place the measured amount on the applicator brush, then go around the record twice. I move the applicator opposite to the rotational direction of travel of the record.
Though you only see a track of “wetness” for a quarter turn or so, the applicator is continuing to apply treatment to the entire surface. Because the dynamic drives toward an equi-potential condition, the treatment will distribute itself, at a microscopic level, toward a uniformly treated surface.
Enjoy your music, Walter