Any suggestions on getting disco dust to stick to an edible image without melting the image?

I hear disco dust is not for consumption. so if you put it on an edible image you wouldnt be able to eat it. a very thin layer of gel may help (not very sure)

It's for a decoration that won't be eaten. Piping gel was my thought also. Guess I'll go with that. Thank you Suzied for your reply.