"As I expected, the wound needs further treatment, but I do not believe binding it constantly will be of a benefit to you. Instead, you must bind it nightly after you have bathed. Obviously," this he said, as if he believed it would not, in fact, be obvious to Harry, "I cannot to do this for you on a nightly basis, and so I will teach you how and, for your sake, I hope you listen and learn," he finished gravely; he held the bottle with the pipette aloft, "this is dittany extract, a significantly more potent version of essence of dittany - apply three drops directly to the wound, - do not apply it with your hands, we shall all know if you have," he said with an amused smirk, "tip your head back and to the side," Harry did as he was bid, grumbling in displeasure when Snape took his chin in hand, and was not gentle in rearranging him; he hissed in pain when the concoction collided with his skin, and felt the wound in his neck burn intensely all along its length, but only for a moment, "now the salve," this he was content to allow Harry to apply himself, conjuring a small mirror so that Harry could see - his throat looked a hint less red, he thought optimistically, "and now," Snape pointed his wand at Harry once more, and said, "Fascia," bandages wrapped themselves snuggly around Harry’s neck, fitting tightly under his ears, "If you are unable to master the incantation, I suggest you take yourself to Madam Pomfrey for an education. I recommend you practice on an inanimate object in the first instance," his smile had a slightly nasty edge, "unless your intention is to strangle yourself into unconsciousness, of course,"