Do belly button piercings scar

Let's get this straight for you and every other reader of this post. Body piercing doesn't form scar tissue. Scar tissue is formed when tissue is cut and then allowed to rejoin, this joint area forms scar tissue ( adisorganised formation of tissue, thus no ability to stretch ). Body Piercings form skin, this is an organised formation of tissue which allows it to stretch once fully healed.

If the jewellery is removed before the tissue heals then it can bond to itself and loose it's ability to stretch. You are forming a tube of skin or a "fistula" this is the clinical term for the tube your body tries to form around the jewellery. So the only time you would end up with "scar tissue" is if you remove the jewellery before it is healed (this can take up to one year in most cases).