If it's full strength confectioner's glaze, I wouldn't use too much of it on anything that will be eaten--it's kind of bittter.
You can thin it with a clear alcohol (Everclear, gin, or vodka) so that it's 50/50. It dries faster, isn't as bitter, and is still shiney. Still, large quantities of it change the flavor of the fondant.
HTH
Rae
I use a varnish made from corn syrup and either vodka or water. The one made with vodka dries faster but they both seem to work about the same way. I start with 2 parts syrup and one part water (or vodka) and add water or vodka until the mix is thick-ish, but definitely brushable. You can use multiple coats if you need to. I only use this on fondant or gumpaste but I'm going to experiment with it on isomalt (using vodka). The sprays or so prohibitively expensive!
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