White egg, has this hardening substance, could be used as glue. On your face you can use it as a masker after you clean your face. It will firm your face. But I was also told that you are not supposed to smile or talk (not to move your face muscle when you wear it) and 30 minutes is the most time. wash it slowly with cool water.
I've heard it's an environmental safe way to moisturize your skin and I've also heard leaving egg whites on your face over night can heal acne. I think it helps with burns too, but I'm only about 80% sure on that part.