Paper hardener?

[jesusonrye.livejournal.com]

Alrighty, text only, first post. its a question.
yadda yadda

I was flipping though the channels a few days ago and I came upon creative Juice and the woman was making some necklaces out of paper. She used a kit, I went to the site and looked at all of the kits and none of them caught my eye. I had some of my own designs in mind, but I need paper hardener to make it wearable.
What exactly is paper hardener? Can I find it in a wal-mart, or will I have to go to a Michales or something. what brand, or whatever?

sorry its so vauge and such,
I googled paper hardener but it was for pictures and stuff. So I'm confused. Can I just buy this stuff anywhere?
http://www.diynetwork.com/diy/cr_faux_finishes/article/0,2025,DIY_13754_5223143_02,00.html
thats the tut by the way.
( I did look in the memories...am I not looking hard enough? )
Thanks alot!!!