She paused, and her face lost all expression for just a moment.

At the door, his face again lost all its colour.

His face bad lost whatever little color it had regained.

He walked a little way upstream, his face lost in thought.

As they talked together her face lost its calm appearance.

His face lost all expression; before he could speak, she turned to leave.

But women are seen as on the edge to begin with, therefore having no face to lose.

His face lost the serious look after a moment, and he smiled again.

His face had lost its expression of being ready to be photographed.

His face had lost ten years, but it was tense, too.