All New Pheromone AdditiveThe new, updated and long awaited Pheromone Additive has finally arrived!NPA for Women contains about five times the androstenone of the old Pheromone Additive, just for starters.Like the old PA, the New Pheromone Additive is also designed to be added to your favorite cologne or after shave. The New Pheromone Additive is available in two separate and scientifically-based formulae, one for men and one for women. NPA for Women is very concentrated! Only to be used for mixing with cologne or aftershave. Comes in small (7 ml) and large (15 ml) bottles, both with a convenient eyedropper lid for easy use.