Mixes work great, but is is very good to get to know each product separately , as Ail advised.
Think of the pheromones like colors. A great painter who knows each color, can make a wonderful overall picture. However, when you’re brand new to working with colors, you can take a few beautiful colors and make an ugly brown them them. Children do that all the time with crayons! 
For this reason, one a time is often best at first… Spray just one of a highly diffusive spot, like the back of your hands, or back of the neck (where it’s warm), and then go close to people… work, coffee shop, party, bus/subway. Close with limited ventilation is best, especially in winter when diffusion is hampered due to the low temperatures.
When you’re talking with people, be sure act normal. Try to notice differences after the fact, so you don’t look like you’re “looking”. That can make you seem weird, which will affect your results.
If you want to see things change in a more obvious way, try applying in the middle of a meeting with one or more people. Excuse yourself to go the bathroom, apply 1 or 2 sprays of something, then come back. Now you’ll have something to compare against – how they were just moments ago, and how they’re reacting now. A very real “before and after”.
Also, men can be a little resistant to understanding body language at first. (I know first hand, I was probably one of the dumbest guys on earth when it came to understanding body language and social cues!)
Pickup artists call this male pattern blindness. It’s not terminal, though… after you use pheromones for awhile, you become better at understanding than ever. In just a month or so from now, you’ll have a better grasp of what people are doing than you ever did. You’ll also have a better grasp of what the pheromones actually do for vs. what happens when you don’t wear them.
Social wisdom comes with time and focus.
Keep on learnin’,
Michael