“If you put your hand through,” she said, “you’ll see—there.” Harrow had bitten off a cry of pain. She had stuck her gloved fingers tentatively over the line, and now she was yanking off her glove to see the damage. Gideon had been the victim of this once before, through Palamedes Sextus, but it was still a disquieting sight. Harrow’s fingertips had shrivelled: the nails had split horribly, and the moisture looked as though it had been siphoned forcibly out, wrinkling the skin like paper. Her adept shook her hand in the air like you would with a burn; the wrinkles smoothed out, slowly, and the nails knit themselves back together.
“Hardly insurmountable,” said Harrow, having regained her composure.

Gideon the Ninth - Act Three, Chapter Twenty