If you running short of time (today) I suggest you try two sprays on the neck. Then go somewhere (i.e., the mall, clothing store,) and just speak to as many as people as you can, with the intention on seeing how long you can hold them in a conservation. 
Bro. You see. You need to “learn” your products’ nature and their effect. Here’s a guideline to following in figuring out what’s best for you: How to find your sweet spot (How to find your sweet spot...)
cheers,
MVKBugatti