The rest of the potion Harry sprinkled liberally onto one of his spare shawls, as he ground his jaw hard against the pain. The droplets on his skin continued to burn and sear like icy acid, and Harry lashed around, biting down hard on his tongue to keep in a hissing cry of senseless agony, waiting for the potion to kick in and totally numb the nerve-endings that it was seeping into. He drew blood with the ferocity of his biting, so intent was he on not waking Hermione from her much-needed rest.