They are beautiful bits of ribbons of the proper width and length for women to add to their hair. This ribbons are quite nice. If she uses them, her hair seems nicer. It is softer, shinier, has more bounce and curl (or is straighter depending on her needs). It will add a simple plus to appearance initially, but the bonus will grow. After a short while, they add a good plus (+3 for a 3d6 range) to the charisma/ appearance of the female who uses them. (Her hair will stay softer, shinier, etc for quite a while even if she does not wear the ribbons with some of the pluses). They will also add to her self confidence and poise.
Unfortunately, the ribbons will start to engender jelousy among the other women who see her. Most of it will be of the catty backstabbing nature. However, someone always “goes to far”: working to actively break up a relationship, manipulating events, lying, and even commiting murder (sometimes the woman, sometimes her love).
These are demon enhanced ribbons, probably from a demon posing as a trader or a boyfriend who then left her.