Tux is super itchy in the winter time, and flakey. I can relate, I am also super itchy in the winter time. We do have humidifiers but I have no idea what the actual humidity in our house is. He is also an environmental allergy dog, but I have that piece under control where he has almost no allergy symptoms spring/summer/fall. Winter is just bad with the dry air and cold. I recently bought and started using Tropiclean oatmeal shampoo/treatment/spray. I noticed a HUGE difference after getting him in the tub and applying the shampoo (lather it in the coat and let sit for five minutes, rinse), and then I applied the treatment (rub into coat, let sit for three minutes, rinse) and I have pretty much daily been spraying him down with the spray and rubbing it in. It is working wonderfully to keep him flake and itch free. There is coconut oil and other things in it as well. I will probably get him in the tub for the shampoo and treatment once or twice a month while we are in winter.

Tropiclean Oxy Med Medicated Shampoo, Treatment Rinse, & Spray: Dog Skin & Coat Products