What are your thoughts on Layering one product after another in one combo or another (IG,AMMO,IO,A314,IS etc.) or should you spray on different body parts ( neck, forearms, writs, etc.) Thanks 
Works fine either way. Once its airborne, noses don’t give a shit if the mones intermingled in the air or on skin. The end result is the same. I tend to layer more at work or during winters as little skin is revealed. Sometimes only my hair is uncovered. During hot days I have a lot more bare skin and hence app points.