as of currently i have had three sessions, they were all on my shoulder, i understand that different placements have different effects, im curious about different locations in general but specifically i have been recieveing the message (in meditation) that i should try it on my head/face, specifically third eye application, it seems like a potentally more hazardous placement that i should use alot of caution, but i was wondering if anyone knows specifically how the effects differ...and if there is any other advice or precautions around the subject