Dark water ring on old oak furniture?
Someone left some glasses on my mom's old oak Hoosier, 1 is white and I told her to use hair dryer (she had tried toothpaste and it didn't work), but another larger one nearby is dark. Will the heat work on that too (maybe take longer, use iron and press cloth instead of hair dryer?)? Or is this so far into wood (not finish, maybe finish is too worn there) that it will have to be bleached out? I really don't want to have to refinish this. She also has a 2-yr old dark ring on antique oak sideboard, but light was so bad in DR I didn't see it.