Androstadienol. Sometimes meeting the right woman takes some time. When that time comes, the last thing you need is for the formula to have worn off and lost its effect. Androstadienol is added into formula's to prolong their effects so you're ready when the time is right. Androstadienol acts as a powerful sex pheromone. Friendly bacteria on your skin will convert Androstadienol into Androstenol. By the time the original Androstenol's effects have worn off, new Androstenol is being created, prolonging the pheromones effects.