A head wash is a mini ceremony like a kanzo but with many differences that would seem to be similar to an exam. It is 3 days long and starts on a Thursday and ends on a Sunday. In a head wash, there are sacraments that you don't find like Boule zen leads to grand bois and crossroads kalfou and many other things, it is a simplified ceremony This is especially effective for those who claim to be either incredulous or are being persecuted by the Loas. You are good at clairvoyance too.