pretty sure the hypnoflash only works for a short time before it wears off but I could be wrong
yeah iirc it wears off after 20 minutes. that’s why you command your slave to kill themselves.
Plus, it destroys the evidence, which is always a plus.
Mindslave implant from Para
Lasts for 20 minutes
The one that lasts forever costs more but I don’t know the prices by my head