Pheromones are chemicals that send out subconscious scent signals to the opposite sex that naturally trigger romantic feelings (chemical attraction).

Phermones signals are detected through an organ 3 inches inside the nose called the Vomeronasal Organ (VNO). When the VNO detects the pheromone, it sends a sexual response signal to the brain.

The "scentless" claim just means that pheromones are effective at levels undetectable with our normal smelling system. The magic mood-lift and attraction that users report comes as the result of the activation of a special set of organs in the nose, called the VNO (vomeronasal organs) not our normal sense of smell. So, the real pheromone effect happens subconsciously. The pheromone (some notice a musky smell) smell is there, but you don't really notice it, because of other smells. That is why many people use a good cologne (or naturally scented oil) with Attract Romance Unscented Pheromone Products" unscented pheromone products. It blends with the pheromone smell and makes it a little more digestible (approachable). Also, if you are wearing a sexy cologne or perfume, it will wake up the sense of smell of your target, he/she will intentionally make an effort to get a good whiff of you, and then the pheromones go to work. The fragrance works as a carrier for the pheromones.

Pheromones hold up much longer than normal cologne, but if you apply them to the body, quite a bit is washed away or broken down in the first 4-6 hours. Manufacturers claims vary, some say up to 20 hours. Actual breakdown time depends VERY much on body heat, sweating, and personal body chemistry; so in the winter on your wrists the scent might last much longer, and if it gets onto your clothing, it can last for days or weeks!