Once, way back in high school, Queen Tuffett (before she was a queen, or even a Tuffett) and I were participating in a service project. We were painting outdoor handrails, and were using silver paint.
After a little while, Queen Tuffett complained to me that she was getting drops of silver in her hair when she bent to pain the lower parts. Her hair is kind of blonde-ish, so the paint didn't show up all that much, but I didn't want her to feel bad.
"Oh, yeah?" I said.
I picked up my paintbrush and stuck it in the can, then ran the globby bristles right down the middle of my hair (imagine Rogue from X-Men, but not quite as much). It had the desired effect. Queen Tuffett laughed, and we kept working.
That strand of hair was kind of clumpy for a few days, but eventually it returned to normal.