H2O guard and gloss is more of a maintenance product than a stand alone sealant. That being said, I've used it alone and got good results. After a strip wash, clay and application of H2O guard and gloss, I would say that car beaded well for a solid 3 months. On my truck I strip wash, clay, polish of needed, liquid paint sealant a d then maintain with H2O guard and gloss. To answer your question though, I have seen 6 months of beading easily out of LPS alone and at least 3 months out of H2O g&g alone.