Two on the back of the neck.....
I quite like a bit of Platinum Egoiste too. I use 4 sprays, 2 on the chest and two on the upper arms.
4?! PE is one of my sillage monsters. I applied 2 once... i could not quite smell it on myself, but a person, almost 10 feet away immediately detected it as I walked by Of course my decant may be spraying a bit too much, but still. Because of its sillage, it is a suit edt. It is a formal scent to be noticed and respected.
Be careful about sprying on clothes... they may get stained.
Right off the bat, I'll acknowledge that body chemistry varies widely from person to person. With that being said, I can't imagine spraying more that once to the chest. Speick EdT being the exception that makes my rule. (2 sprays).
Depends on a lot of factors:
- Skin type
- Strength of cologne
- Compatibility with scent
- How strong one wants it to project