Found this online about brushing wet hair:
Generally speaking, itâ€™s not a good idea, at least not with a traditional bristle-brush. The more modern â€œtinedâ€ brushes used for blow-dry styling, are acceptable, provided they have widely-spaced tines.
The issue at hand is that wet hair is much more fragile and susceptible to damage than dry hair. Fine-toothed combs and finely-tined brushes (as well as bristled-brushes) all exert a lot of pressure on the wet hair because they either a) try to force the hair between tightly-spaced teeth or tines and/or b) try to direct the hair in multiple directions at once. Wet hair will stretch to the point of misshapenness, and often break off when placed under too much stress.
The best way to detangle and groom wet hair is with a wide-toothed comb. You can use the wide-tooth comb first and then work your way to finer-toothed or tined styling tools.
at 6:16 PM on Jun. 6, 2009