Halogen light bulb in globe fixture?

[JayhawkSD]

I have light fixtures in my bathroom that have globes, about 6" in diameter, four over each sink. Each globe unscrews (rather awkwardly) to allow you to change the 40-watt light bulb inside it. I have run out of incandescent light bulbs and, of course, cannot get any more.

I picked up some Sylvania Halogen Super Soft White bulbs which are 28-watt, 40-watt replacement, but I'm a bit uncertain if it's safe to use them in the globe fixture. Halogen, I seem to recall, create more heat.

From what I read online these Sylvania things are tiny Halogen lamps enclosed in larger glass things to make them act more like traditional light bulbs, so the light quality should be okay, but will they cause the globes to overheat?