I just ordered some gluten free shea cream from beantreesoap.com
I don't know if it is on her website, but you can order just pure shea cream with or without essential or fragrance oils (all gluten free).
I have had good luck with everything from that source.

I don't know of any commercial brands off hand, but you could also order shea butter direct from soap making stores (if you were comfortable with their packaging procedures)
Good luck!