Originally Posted by
TransitBiker
Have you been able to find a skull knit cap to go under helmet? It can serve as sort of artificial hair, i've found. Both cutting the air against the skin, and creating a warming layer.
I have a cyclist friend with alopecia, and he always rides with a cotton (I think) like skullcap under the helmet, otherwise in the summer the sweat is intolerable (it sucks to not have eybrows). Surely it would help in the cold too.