One tip mentioned is to raise your eyebrows. As example: when you first meet someone, raise your eyebrows slightly (or one), smile, and tilt your head and greet them. Making someone else feel special makes you charming. Along the same lines: I find that voice cadences, and inflection, work pretty well for being charming! Take time to enuncicate the whole sentence you want to say, throw emotion into your words. And if…
How grossly manipulative
Is it fair for the less charming people to be at a permanent disadvantage? Or does being conscious of what is for others unconscious make one automatically manipulative? What if after a few months or years of intential charm, it became automatic?
Compare it to being a poor driver that is unknowingly causing stress and danger to fellow drivers. They take a course in defensive driving and consciously learn a few techniques like counting the distance between them the vehicle in front, not passing in the right lane, anticipating red lights, etc. After a couple of years of consciously driving like this these habits become automatic and traffic around them functions more smoothly. Practicing social skills is more like this than you probably think.
Learning how to write clearly and persuasively is another example that one could dismiss as manipulative at their own peril.