A cold sweat began to form on his brow.

After a while, a puzzled frown formed on her brow.

For the first time since the attack began Burke felt sweat forming on his brow.

Wait a second, Karr thought, cold sweat forming on his brow.

Cold sweat formed on his brow as the ruby eyes bored into him.

I am about to comment on a small line that has just formed on her brow, when the lights go out.

Harry, with beads of sweat forming on his brow, looked again at Mann.

He felt sweat forming on his brow again and realized it was very humid here.

I now understand why little drops of moisture are forming on my brow!

Water formed on my brow and ran down the sides of my neck.