How long have you used this?
How often do you apply it....to both comb and wattles??
Curious how soft and easy to apply it is?
Horizontal nipples can still drip a bit when they drink, but better than a dunk in an open waterer. Mine get their wattles bit when they nosh on the snow banks...
Personally, and IME, there's little to nothing you can do to prevent FB on combs, if the conditions are right it's gonna happen.
My take is leave hands off both before and especially after for best recovery and healing.
https://www.backyardchickens.com/articles/frostbite-in-sw-michigan.74597/...