I've come across information about glamour spells on many websites and have a basic knowledge of what they are, but a lot of the actual glamour spells conflict in just how powerful they can be. I've come across spells that are meant to help you go unnoticed, which sounds reasonable, as well as ones that are supposed to make others perceive the color of your eyes or hair differently and some that are supposed to make you look more attractive to others, which sound like they would be extremely draining to cast and maintain. Could anyone that uses glamours clear up what limits glamours have?
If you're thinking something along the lines of mind control, actively picking and choosing what others percieve, that's not real. However a spell to go unnoticed will work, that is if you are putting active effort into not attracting attention, not wearing bright, flashy clothes or running around screaming like a maniac. Glamour spells, in theory, could work if you yourself work with them, performing mundane actions to achieve your goal alongside the spell.