Answer:
It's usually found dried, but often kept slicker. Above another need, it's said to be thicker. What is it?
The one who makes it, sells it. The one who buys it, never uses it. The one that uses it never knows that heβs using it.
What comes once in a minute, twice in a moment, but never in a thousand years?
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
What turns everything around but does not move?
Keep doing me to avoid lens dryness