Answer:
My life is often a volume of grief, your help is needed to turn a new leaf. Stiff is my spine and my body is pale. But I'm always ready to tell a tale.
I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
I'm very tempting, so its said, I have a shiny coat of red, and my flesh is white beneath. I smell so sweet, taste good to eat, and help to guard your teeth.
The itsy bitsy teeny weeny yellow polka dot variety is quite popular.
You use it between your head and your toes, the more it works the thinner it grows.