I parted my daughter’s hair and tilted her head into the sunlight. Peering closely at her so-white scalp, I breathed an inward sigh of relief. Clear. I continued to part and peer, part and peer. Nearly done. Then I saw it. A tiny black speck nestled in among the golden strands. Motionless, I could almost believe it was a bit of dust. Almost. But I knew better. My shoulders slumped as I reached for the tweezers.