Her smile was dissolving slowly into a petulant frown.

My own smile dissolved completely, but I didn't immediately clean my face.

The smile dissolved like ice in a hearth.

That thought apparently struck him at the same time, and the smile dissolved into uncertainty.

When the subject is raised, the smile that comes naturally to Ellsworth's face dissolves.

Her wide eyes and broad smile dissolved in the sunrise.

Once the wildlife officers were gone, the trooper's easygoing smile dissolved.

And his smile dissolved into laughter until the grotto bounced with echoes.

Her wide toothy smile composed of ivory white teeth dissolved as she saw he was fully dressed.

Her smile dissolved into anger the second they were out the door.