Does anyone know what liquid latex is? it is an ingredient in which I need to make a mask?

Here are some products:


http://www.artmolds.com/index.cfm?u_cat=鈥?/a>


http://www.artmolds.com/product_details.鈥?/a>


http://www.cementex.com/index.asp?PageAc鈥?/a>





Here's some instructional pages:


http://www.hirstarts.com/moldmake/moldma鈥?/a>


http://www.hirstarts.com/moldmake/moldma鈥?/a>





Please keep in mind some people have serious allergic reactions to latex. Please test a small area first.Does anyone know what liquid latex is? it is an ingredient in which I need to make a mask?
I don't know, but be dang sure whatever you use isn't toxic.