I have made sand play dough before - this is NOT Moon Sand.
We also made Cloud dough: Cloud dough
Moon Sand - is a completely different composition.
Here are a couple of sites with recipes - there are many more:
I was lucky enough to find the real Moon Sand At garage sales this summer.
Another blogger found this in her neck of the woods: not-cloud-dough-this-is-called-delta-sand
No matter what the brand or whether it's home made - I am more than sure the children will have great fun playing with this amazing sand.