Dry IMO, never tried it as a drying aid, think its a little to thick ? I a
Ways just dry then use the BSD on top of the sonax PNS.. Love the sonax products..
I use it after blow drying.. it's a little thick compared to my other favorite QD (Zaino Z6) so better to use it in shade, it can be hard to wipe off if sprayed too much specially in hot weather.
I have had issues with streaking when applying too heavy on a dry car; a little goes a long way. Perhaps I will try it as a drying aid today and report back.
Dry, although i tried using it diluted with distilled water 1:2, still works! but beading and hydrophobic properties are not that awesome, compared when it is used at full strength.