Chapter 34:
Harry turned to the sound and smiled slightly. "No sir, everybody knows that you keep the coffins and blood in your personal rooms. It's the chains and whips you keep here," Harry risked joking.
Snape seemed to freeze before his mouth twitched slightly. "And I thought I had hid that so well," he drawled.
Harry smiled and, after a beat of silence, said, "Thank you, sir, for making my ointment."
"As I have said, Mr. Potter, it is of no consequence," he said, reaching into his robes and pulling out a metal vial. "When you are running low, inform me and I shall make more before you run out."
Harry nodded and considered offering the man some money, but thought better of it; he knew Severus was a proud man and would probably take it as an insult.
"Have you an idea of how long this vial will last?" Snape asked after a moment.
Harry considered his words and wondered if this was Snape's way of asking how bad his scars were. Thinking, Harry considered how long his current vial had lasted and gave the date he thought about right, "I should last until mid October, maybe Halloween."
Severus was slightly surprised by this, but hid it well. "And you are using it correctly?" he questioned.
"Yes sir, I've been applying a small amount to each scar every night before bed," Harry told him. He was sure now that Snape was trying to find out about his home life surreptitiously.