Answer:
Find me on body builders or in the drink aisle.
A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of a green grass. What am I?
What is it that after you take away the whole some still remains?
I am what brings things together. Without me everything you see would be a total mass or debris everywhere. What am I?
Late afternoons I often bathe. I'll soak in water piping hot. My essence goes through. My see through clothes. Used up am I - I've gone to pot.
No matter how little or how much you use me, you change me every month.