Answer:
I start new then become old. Start clean but be one dirty. I usually start big then become little.
What is deaf, dumb, and blind, but always tells the truth?
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
Although a human shape I wear, mother I never had. By every miss I'm valued much, still my cruel fate is such by boys I am often despised. What am I?
I cannot be felt seen or touched. Yet I can be found in everybody. My existence is always in debate. Yet I have my own style of music.
No matter how little or how much you use me, you change me every month.