Laser Hair Removal for Upper Lip and Chin

I was expecting pain, so it wasn't as bad as I thought. The descriptions here are pretty accurate. What I wasn't expecting after 6 treatments was a scare on my chin and hair still growing, almost at the same rate as before.

I can't figure why it works so well for others and not me. I have medium light skin and brown hair. I guess I'm back to plucking and make-up to cover up my scar.