Don't listen to the "don't fish in the cold" crowd, fishing in the cold is fun and fantastic way to get chonkers (also real fishermen fish in all weather, not pack it in because you can see your breath). That being said ice build up will happen no matter than type of line (although mono and floro take longer than braid, if you want braid get something with a good coating like power pro v2 super slick), the idea is water plus cold wind, it's less about overall temps and more about wind chill that causes the freezing (0°C with lots of cold wind will freeze me up faster than -15°C on a nice sunny day with no wind), this is why ice braid is awesome if you have a hut or shelter but will still freeze without one.
Basically anything that prevents water build up but won't hurt your tackle is a good choice. Burt's Bees, petroleum jelly, etc. are great for applying to your eyelets to prevent the ice build up and PAM (cooking spray), silicone spray (wd-40), any type of line conditioner, rain-X, etc. in a spray bottle are great options for the eyelets and the spooled line. Also recommend using a sealed reel like something used for salt water fishing to prevent water and ice build up on your gears, etc. They also make a waxish de-ice seal for fly fishing line to prevent ice up (same concept as part of the reason to apply wax to your hockey stick blade tape, also another option but you're gonna have to wax your entire line which can be extremely tedious). The problem will never go away so keep applying, if you're using scents good idea if reapply when you do your scent (10-25 casts depending on type of fishing, still vs casting). Another way is using a tip up line at the end of your mainline (useful for braid since the braid doesn't really touch the water but you can still get that sensitivity if you're fishing uber deep and need it) or an extremely long leader kind of idea and give er the old blood knot. Final idea is find a rod or take your current rod and upsize your eyelets, the bigger they are (obviously within reason) the more it takes to cause a freeze up from occurring.
Reality is until your line is actually frozen stiff to the point where you're not gonna feel the bite anymore (then a portable heater, your car heater, hot water bottles, etc. to unfreeze your line) than the rest is fishable, remember people ice fish and fly fish for arctic char in the lower arctic December times. If you end up on mono/floro instead of braid and have to use a lighter lb test than you might need to get a longer rod to compensate as well (old guys catching 15+lb chromes on 8lb-10lb test and light rigs, all about that drag and skill). Hope this helps you, tight lines 🤙
