I needed to mix up a batch of M4OHN and decided to go with Olive Oil because the though of ingesting industral solvents (Peg 400) didnt appeal to me. However, Since then I have been doing a little net research on Peg 400 and have changed my opinions on the stuff. It seems that it is used In quite a few products (tootpast being one of them) and for the most part is not as bad as I had imagined. Here is a coupla of interesting reads on POLYETHYLENE GLYCOLS in general:

http://www.inchem.org/documents/jecf...no/v14je19.htm

and here:

http://www.mindfully.org/Plastic/Pol...ycols-PEGs.htm