Well from my experience when using pheromones women react in various ways.I had experiences from some girl to just stare at me and other girl bringing me to her house ( this one I knew from before but she wasn’t so friendly to me 
).The thing started like this.I was in the cafeteria i go often and she came along with some male friends.As soon as she greeted me and sat on the other table with her company she started looking at me and finally came to my table and sat beside me ( i was alone on the table).We started talking and she totally forgot “her boys”, who started looking at me verry enviously.Finally they went out the cafeteria and the girl barely said "bye " to them.I felt uncomfortably “steeling” her from them.we spend 4 hours on the table drinking tea and beer and talking about everithing.She kept looking at me in strange way and playing with her hair.I was like “WTF, is this for real”?Then she invited me at her place.This day I spend with her about 8 hour without planning it from before.And I knew this girl because we took classes together but wasn’t so close at all and never spend more than 10 - 20 minutes with her and some classmates after classes.That time I wore some sexual attractive pheros.From this kind of mones here at smartmones.com they have the ammo and turn up the heat.They both use the main sexually attractive pheromone Androstenone but ammo have some aditional mones in it and this makes it more social than tuth witch is like raw, animalistic sexualty( and thus not appropriate for some venues as work, school ext. it’s more for clubs, strip bars, special grils …).
A good thread I started about how exactly one is percepted by girls while using mones is this one, take a look
How exactly one is percieved by women while wearing sex appeal boosting pheromones???
Well I had some hits close to what you mentioned - the girl to initiate the contact or give you a sign that she’s attracted- but how one reacts on pheromones depends more on ones’ personality so don’t expect every girl to do so even giving you IOI.The good thing is that with the right dosages of pheromones the girl starts to respond to you right away so if you make the first step she’ll probable respond verry good to it.
hope this was helpful enough.
p.p. sorry for my bad english witch is not as good as I want it to be but it’s not my mother’s tongue and I don’t have much free time now to improve it.