"Gloves exist for a reason," Severus pointed out.
Harry held his hands under running water, watching boils form, expand, erupt and slough off. It was painless, but faintly gross.
"I was hoping to surprise you," Harry replied.
"What were you trying to do?" Severus asked.
"It was to be a skin-regeneration lotion," Harry admitted. "Something you might be able to use on your scars."
Severus unconsciously touched the scars that still decorated his neck.
Harry leaned over, pressing a small kiss where Severus' finger had rested. "Not for me, but I think you might be less self-conscious if it works."