@depglass Stop using immediately is my suggestion. That would definitely scare me.
When you think about it, it is like you are using a conditioner to wash your hair. I hate to think of the build up on your hair. I purchased Wen once and when I read the directions, I immediately sent it back. Rinse with cool water, I don't think so especially in the winter.
Get yourself a shampoo that takes care of build up or rinse your hair in apple cider vinegar and water (half & half). Good luck. Go back to shampoo -- it's healthier.
kindness is strength