Nexus Pheromones delivers the essential chemical-hormonal elements to subtly yet unmistakably communicate your masculine power. Simply apply Nexus Pheromones onto your pulse points as you would apply any cologne - you can even blend with your existing aftershave if you wish. Just 1-3 sprays will produce results for roughly 8-10 hours. 100% Pure Androstenone Pheromone Concentrate. Some customers reported receiving a damaged or defective bottle. Should this occur, you may request a refund or replacement with no questions asked. Results may vary from customer to customer.