It is a tacky compound sold by a german company that makes a lot of stuff for office, I have the name some where in the many plastic totes that I keep in order not to loose important stuff, but I can not find it now. the brand is something like URI, UMI. I´ve used the stuff for year, over and over, and is great. You can also use a spray wich is sold for the people that do art work to hold the mask. is a multiple tack, you will have to spray on a non adhesive surface (paper back for adheseve paper), and then work like we all did when we where kids, until you have a small ball, then put it in the tip of a tooth pick, and presto a good holder. Hope this serves you, If I find the stuff, I´ll will put the info in this forum.