I have recently found out that the white/yellowish "sweat" stains one occasionally finds on t-shirts might be aluminium chlorohydrate polymers.
While talk about aluminium and antiperspirants is all over the press and there are lots of DYI-instructions for removing them, they all sound quite pseudoscientific. I find it strange, for instance, that some guides recommend both vinegar and/or baking soda as a remedy...
Any ideas what else I could use to dissolve such stains without also dissolving much of the pigments?