T.F.
Why would you do this to your child?
It's her body. You say yourself you can hardly see a scar but it obviously bothers you more than it bothers her.
Use vitamin e oil on it and let it go. Always use sunscreen!
As for the slightly chipped tooth in your other question. .. Normal mom. The dentist can file it if necessary.
What you are talking about is purely cosmetic. It's not like you are repairing scars from some accident or something.
I sure hope you are not projecting your opinion of these minute imperfections toward your daughter. If so, you might be looking at the next plastic surgery addict by the time she's a teen.
Be realistic.... Love your child for who she is. No one is perfect, no one will be perfect so why put that pressure on her due to your insecurities? Get a reality check. Stat!