When he applied his shaving potion the following day, Severus" mind was still on the events and conversations of the day before. He really should get in contact with Potion Master Alexandra Müller. She was intelligent and funny, and her indebt knowledge about reciprocal effects of crystals and cauldron materials was exceptional. Though her assistant had barely offered an opinion, he seemed tolerable enough should they come across each other again. Would Harry mind if he conversed with the witch in his free time? His current master had never guided his activities as zealously as the Dark Lord had. Washing off the potion, he decided to simply ask. Harry wouldn't begrudge him the interest. Otherwise, he would not have invited him to the exhibition in the first place. With a rare smile, Severus dressed and carefully spread out the notes he had made yesterday.