Angelina Now we're getting to what makes me curious, because, if the stimulation was too weak, I wouldn't give up. I'd get a non-elastic sweatband made of terrycloth or do some arts and crafts and keep a long narrow scrap of corduroy.
If that wasn't enough, I'd try adding some decorative patches or hand embroidery to the headband to add more texture.
I saw catherine98 had trouble with too much friction. Maybe a non-elastic sweatband made of the kind of poplin used in dress shirts (we call it broadcloth here), with a pretty print on it, and then a patch of terrycloth sewed to the inside only where the forehead is. Claim it's to soak up sweat and position it to only add friction where you need it.
If there's still too much friction, maybe feed another piece of something thin under the parts of the belt where you want less friction, so the cloth can rub against that instead of your skin, or find something like skin cream that you can safely use as lubricant for the parts that don't need the friction and then wash out in the bathroom sink.
Am I more dedicated to this idea or is there something I don't understand?