Answer:
It's usually found dried, but often kept slicker. Above another need, it's said to be thicker. What is it?
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
When there is fire in me then I am still cold. When I own your true love’s face then you will not see me. To all things I give no more than I am given. In time I may have all things, and yet I can keep nothing.
At the sound of me, one may dream or stamp their feet, At the sound of me, one may laugh or sometimes weep.
Slayer of regrets, old and new, sought by many, found by few.
I have two eyes in the front and a lot of eyes on my tail