I do basically the same thing I do every time I ride: metal comb on the dried mud, curry comb all over, dandy brush, finishing brush, face brush, spray mane and tail condintioner on mane and tail and brush out the tangles, clean the feet. With spring, I will bathe her FINALY, she's has lots of white so the dirty spots show, I will scrub her hooves to get them clean and use Quik Silver on the tail to get the manure stains off. The big difference is the bath.
I read that you can bathe horses in the winter, but you do it by using a damp sponge, squeezing it out really well and rubbing (with soapy water) then do the same thing with clean water to get the soap off. But I wouldn't want to be wet in 40 degree weather.
Bella also gets blanketed most nights so she doesn't have a winter coat on the body, so not much shedding.