My hair feels waxy and mushy and is frizzy when wet whenever I have used a polyquat. They build up like crazy on my hair which leads to sealing off my hair to everything I use. I cannot avoid sulfates when polyquats get in my hair because they're incredibly hard to remove.

CJ CCCL was a disaster for me because it has a polyquat in it. It's in your siggie so I figured I'd mention it.

Be aware though that not everyone hates polyquats, and not everyone hates all polyquats because it's a big group, and each individual polyquat has its own function. I avoid all of them as I've tried a great variety but it just doesn't work for me.
F - LP - HD - NE
Fine, low porosity, high density, normal elasticity
Hairtype 2c

Low poo: Weleda Oat Replenishing Shampoo
Protein: IAGirl's gelatine treatment
Detangler & LI: KCKT
Styling: KCCC

Beauty Is Not a Number