Garry Edwards , Oct 12, 2009; 02:28 p.m.
This article will explain the differences between umbrellas and softboxes, and will also tell you what beauty dishes are - and what they are not. Personally I would forget about something that will go on a hotshoe flash.
Using a hotlight with a non-fireproofed diffuser may produce interesting results that aren't welcome, as well as producing a very strange colour of light. Flash and tungsten lights really don't mix that well.