|Dr. Ubbly's Oblivious Unction|
Heals wounds left by thoughts
Dr. Ubbly (presumably)
Dr. Ubbly's Oblivious Unction was a medicinal potion given to Ron Weasley by Poppy Pomfrey after he had been attacked by brains in the Department of Mysteries. It proved mostly effective in healing the injuries caused by the brains' tentacles and thoughts, though several months later there was still at least some scarring left.