Remember with the Collinites less is more. A couple swipes in the can with a damp cotton or microfiber applicator is all you need for a whole panel. If you can see a distinct waxy layer you're using too much and if you let it dry you'll never remove it. That's the number one reason complain about how hard it is to use. It really isn't if applied very thin and worked in well vs applied thick and left to just dry. It should look about as obvious as a smeared greasy fingerprint. Hard to see really, a test to see if you need to use more is press the applicator on glass and if you see stuff transfer to the glass you're still applying wax.