I notice that an ingredient in this is "Pheromones". I notice that this has a lot of great reviews, so I've been planning to get a bottle soon. Now I am curious about this. I am not interested in products that say they have pheromones in them, I think the idea of products with pheromones in them is silly. I have not ruled out getting this, but is it a vegan product? Just what sort of pheromones are in this stuff?