Answer:
I am a kind of coat that can only be put on when wet. What am I?
you need thousands of me to create a digital image.
When you take away the whole from me there is always some left.
When I am caught I am thrown away. When I escape you itch all day.
I have no bed to sleep and no palace to live. I don't have a single coin but I am known as king. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?