I had a few requirements:
A) It had to be ingestable - since it is inevitable he will lick his paws
B) It had to be made of something I could find easily since I wanted it right away
It's Coconut Oil!
Odds are you already have a jar in the cabinet. I've used it for the last several days and it has made such a difference! Just rub a bit of room temperature oil on the pads of your dogs feet right before heading out the door. My dog was a little confused at first (Why are you rubbing stuff on my feet??) but now he loves it. There has also been research that coconut oil has many health benefits for dogs, some people even bake it into treats. I still wipe his paws when we come in but I don't worry if he does manage to lick some off.
note: while this does help protect paws from salt, ice, snow, etc. it does NOT protect from cold temps / frostbite.