The ingredients KM posted also show glycerin - I've had to stop using glycerin in anything I leave in now that the dews are low, otherwise it sucks the moisture out. That could be part of what's happening. But I also agree that the yucky build up feeling is probably the polyquats. I don't know about the science behind whether they truly "build up" but I'm pretty sure I've read somewhere that some of them are not water soluble.
2c/3a, botticelli/wavy/'swavy (huh?)
fine, dense, normal porosity/elasticity, dry climate

My favorite brands are Kinky Curly, As I am, Curly Kinks, Curl Junkie, and Darcy's Botanicals. Also love sealing with oils (loving argan oil right now) and styling with jelly products (KCCC is my current favorite). Mostly trying to keep it simple!

CG since 12/29/2011