Chaotic commands renders a creature immune to magical commands. Taunt, forget, suggestion, domination, geas, demand, succor, command, enthrall, quest, exaction, and other spells that place a direct verbal command upon a single individual automatically fail.
In addition, anyone casting one of these spells on a creature protected by chaotic commands must save vs. spell. Failure means that the caster must obey his own magic; the spell's effect has backfired on the caster.
The material component is a piece of eelskin.