It's impossible.
Not perfect generally, but it has never ever looked this bad. All of my usual techniques to smooth it are just busted, as soon as I wash it, whether I leave it to dry naturally or blow dry it, it has turned into a fuzzy nightmare.
I don't need product recommendations, although I was fussing about it earlier - it was bloody just fine before the heat set in in this house! It had shine!
Now it looks like I am auditioning for the Muppet show.