Answer:
Tear me off and scratch my head, what once was red is black instead. What am I?
Find me on body builders or in the drink aisle.
The more of me you take, the more I appear behind you. What am I?
Feed me and I live. Give me water and I die. What am I?
I am filled with garb the price is free. Just return what you don't need.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?