USW: Tip the World Over on Its Side
Get an old mirror. At midnight, illuminated only by a single candle, confess all your darkest humiliations into said mirror. If you drive yourself to tears with your confessions, the mirror will then show anyone viewing it their truest selves. Including any lingering enchantments placed on them.
Sadly, the magic enchanting the mirror is not permanent, lasting only a few months at most.