frostbite on combs

[wabashchickens]

What should I do for frostbite on combs do I just leave it or does it need to be attended to? If it needs attended to what do I do for it?

 

[Eggcessive]

This link has good information on frostbite treatment: http://www.the-chicken-chick.com/2013/12/frostbit-in-backyard-chickens-causes.html