Answer:
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
What word starts with 'E', ends with 'E', but only has one letter? It is not the letter 'E'.
Inside a great blue castle lives a shy young maid. She blushes in the morning and comes not out at night.
In the evening I'm long, in the morning I'm smallΝΎ When seen in a ballroom, I'm nothing at all.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.