How exactly does the potion of persuasion work? I let Jayna make three of them and when I use one, I get approx. 2 points in persuasion (not a full rank yet). But when I drink another potion (trying to get a full rank), all the points disappear... even the points from the first potion. Is it possible to get a full rank of persuasion just by using potions? Perhaps someone knows the answer. Thanx in advance!