I've been using sheet masks and despite being made in asia a lot of the ingredients are listed in English now, but I am not a chemist so naturally it's hard to make sense of them. Many come in different types (whitening, moisturizing, tightening, etc) but I have no idea if any of these generate any benefit they advertise. I really like some of the masks but it'd be great to understand more about how they "work" or what they're actually able to do for my skin.

Here's an example of an ingredients list from My Beauty Diary's Aloe mask (a popular type)