Hey everyone!
I'm making cookies for Christmas, and I just learned tonight that my grandmother is stopping by in the morning. I had planned to use Royal Icing to decorate, but since I'm short on time, thought I would just brush on some Luster Dust.

Question: this Luster Dust has been around for AWHILE. It's still in it's package, has not been opened...but it's been sitting on our back (enclosed) deck throughout the year and through the hot summer and cold winter(I have a rolling cart where I keep a lot of the supplies I don't normally use stored out there).

Will the ingredients spoil? I don't want to make her sick...

Thanks in advance!

I don't think so but of course do what you think is best!