I've been looking all over the place trying to discern whether the white bottles used for Nivea's Line of After Shave balms are white ceramic, or thick white opaque glass. I checked the companies' website and I've look around on the web a bit. Aside from some off-handed comments made by reviewers, there's virtually no mention as to the material of the bottle. It's a little important because my city's recycling program sucks, but it can take a bottle akin to a beer bottle just fine. If it's ceramic, then I'll just have to chuck it, unless I find someone interested in using them in art or something. BTW, the reason I mention the beer bottle thing is that my only clue is that there's a number and a symbol imprinted into the bottom of the bottle. From what I read, beer bottles have similar numbers on the bottom, in order to identify the mold from which the bottle was formed during the packaging process. So, any guesses?