Maybe Hobby Lobby will take it back?
There are no instructions available (that I could find) at the link listed on the product, and without instructions, the product cannot be used for it's intended purpose (as a whipping soap base).
(Just a thought - I think I've seen this problem pop up before. An alternative would be to contact the maker directly - they don't seem to have this product listed on their own website, but it may be a wholesale-only type thing. If you contact them, they may be able to forward the instructions to you).