Charming narcissists turn on the charm for one of two reasons. They might simply crave your attention and admiration. But they also might just have plans to take advantage of you. In either case, the reason they succeed in manipulating you is the same. Victims simply confuse interest with caring.
Some folks are charming in the most benign and appealing way. They are not only sincerely well-mannered but also genuinely positively regarding of others. The very way in which they conduct themselves and the authentic respect they have for others is “attractive” in its own right. But there are those characters whose display of charm is a farce, part of a calculated use of seduction to take advantage of others.