I think when it comes to attracting friends, what really matters is establishing a sense of sexual attraction. Safety and comfort would have already been established if she’s friends with you, she needs to see you in a sexually attractive sight…not necessarily in the sense of her wanting to have sex with you, but the attraction needs to be established.
I really think your approach to this situation is far more important that pheromones, though pheromones will certainly help. You need to present yourself to her in a way that is different from what she knows, because she knows you as a friend. To some extent, you’re going to have risk your friendship with her and leverage it to make it work. To some extent you have to accept that fact that this will drastically change your relationship with her, for better or for worse. Most importantly, all of this needs to be done and realized in confident, capable fashion.
As far as pheromones go, I think a well timed dose of androstenone (ammunition) should do the trick…or any sexually attractive type of mix. I’ve experienced a number of occasions where my ‘attraction’ mixes unintentionally had an effect on my female friends, who happened to be out with me. It can be awkward sometimes, only because consciously I know, and they know that it shouldn’t be happening.
Ammunition with a slight dash of A314 would do well…something really masculine and in control…something exciting, but not intimidating. The good thing about ‘targeting’ friends or people you know, is that they are less affected by the negative aspects of the ‘distancing effect’ that heavy loads of androstenone and/or A314 can create…at the same time, they are less likely to register the positive effects right away.
You also might want to look into TAF, which has a bit of a perception altering characteristic to it, as a ‘steering’ pheromone. This may facilitate her seeing you in a different light, and make her more receptive to seeing you as more than a friend, but someone she could be sexually enticed by.