Answer:
I am a kind of coat that can only be put on when wet.
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
What is made of water but if you put it in water it will die?
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty. What am I?
What do people spend a lot of money on every year, but never want to use?
The answer I give is yes, but what I mean is no. What was the question?