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LOL, yes I do dunk my glasses. I have even held them under for awhile to warm them up, and they still keep fogging up! It's quite annoying. What is YMMV, Drewstar?
Also, this one is probably a stupid question, but oh well, I will ask it anyway. Any reason not to put your whole head in the water occasionally? I have a lot of headaches, and I've always used hot water in the bath or shower over my head and face to help relieve the pain. If I rinse my hair out well before getting in the tub to get rid of as much shampoo/hairspray residue as I can, is there any reason it would be bad to put my face or head under water occasionally? Last night I went in with the beginnings of a tension headache, and every so often I leaned my face forward into the water, and it really helped.
In one of the handy man home DYI mags I susbscribe to, there is a section on tips and tricks. This month one tip suggested to avoid fogging of your bathroom mirrors and eye glasses, try applying some shaving cream to them. It reported one application would last several weeks.