These mustaches are self-adhesive, so after sticking and reapplying once or twice they lose their stickiness.  They come stapled to the case but this did not affect the mustaches at all when removing them.  I have had some trouble removing the backing to the mustaches but it's not impossible.  Also, expect to eat a lot of hair!! These shed like crazy.  These have been really fun, though.  This would be great to get for the growing trend of "mustache parties".