None of these things “work”–it’s the person doing it who either makes or doesn’t make it work. You have a new tool so you feel more charismatic. That’s what the girls are responding to. Palmistry and other gimmicks are excuses to touch someone–(just like “The Cube” is just an excuse to talk about more loaded things like relationships and sex) no one’s fooling anybody.
Ultimately, you’re at your best if you can learn to rely solely on yourself without using a crutch. Thinking “I’ll be good at getting girls today because I’m wearing this hat” or “Women will talk to me because I have this cool new toy” isn’t particularly healthy psychology. You want to feel–eventually–that YOU’RE the desirable asset–not a magic wand.
That said, though–if you find that you’re able to talk to more women with your prop, then sure, use it for awhile because ultimately you need to get more comfortable talking to women. But just treat them as training wheels.