it is a very common practice, but that doesn't really make it a good one.

like has been said, sometimes it will cause the shadow to develop a hard film. not all shadows do this though, it's really a trial and error thing.

but rather than taking the chance, i'd reccomend doing what absolut_blond said and just setting aside a small portion of the pan for wet use

__________________
buy my stuff or sell me yers.
specktra.net monthly challenge