Several broadsheet pages of a Quito newspaper had been packed in, probably wet, to keep the head's shape while the skin hardened.

"And you will join them if that skin hardens enough to crack before you get it tanned. "

Her fingers reached within his clothing, stroking his skin, working their way to where the skin hardened into stone.

During this time, the larval skin which was initially milky white actually shrinks and hardens to form a dark brown puparium.

It was also quite soft, but by next morning its skin had hardened into a good shell.

Systemic sclerosis, a condition in which skin hardens.

My hands toughened, my muscles strengthened, my skin hardened against the cold and the rain.

Any vulnerable parts should be treated with zinc oxide plaster, so the skin hardens overnight.

The skin hardens and wrinkles to form a kind of armor.

Then the skin hardened again and the eyes snapped open.