Hi Lioness 
I use and love Scent of Eros. It’s light cops and androstenol. Hands down one of my favorite products. I use it as a base, when wearing other pheromones, though it works great all by its little self. When I use it I wear the whole gel pack because that’s what works best for me. I usually spread it up my arms and to the sides and back of my neck…and/or add some to my cleavage.
Yes, you can wear it with other pheromones. I use SoE first, let it dry down and then spray my choice of other pheromones on top.
Here’s a conversation a few of us had with the venerable JVKohl, creator of scent of Eros, that you may find helpful.
Bella