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 Curl Junkie, Darcy's Botanicals, As I Am, Curly Kinks and Shea Moisture. Also love sealing with oil and styling with jelly products.
CG since 12/29/2011