Originally posted by: zinfamous
Originally posted by: skace
Originally posted by: zinfamous
I think deodorant makes the problem worse, actually. i have this theory that it mixes with the urea in your sweat, bleach and detergent, and leads to the crusty layer that forms.
Yea, I did some basic searches after making that comment and it turns out no one really knows why this happens, at least not that I could find. Read about people changing their diets, switching from antiperspirant to deodorant and back again to going with nothing at all or switching brands. Weird. My shirts stay white and I use Old Spice Sport, that's all I know (The white foam dissolving one).
so it seems the consensus is the antiperspirant. That makes sense. I think I've mostly used Right Guard sport/extreme/cool--whatever is on sale--gel. I believe it is antip + deodorant, over the last 15 or so years. It's usually a good deal in 2 packs at Target
and my white undershirts last ~1/2 year before the ick takes over. the few shirts that I've worn without undershirts show the same problem, though they are darker.