Flash and Polariser filter ?

Will a polariser make any difference to reflections if used with a flash.
I'll be trying to get Frog/Toad macro shots soon and was going to try using my ring-flash but am worried about reflections off the amphibians wet skin and water.

I wouldn't have thought so as usually they are most effective when at 90 degrees from the light source.

Try it and see?

The flash could be set at 90 degrees; this may help?

Regards
David