Found on StoneLab\'s page:

What are the best ways to apply pheromone products?

Wear the PPA on trips to the grocery store, the library, the bookstore, etc., not just out to the bar or club. Many of our customers have had limited success in crowded, smoky bars (where there is an overwhelming load of olifactory and vomeronasal stimulation present) but have experienced VERY good results when just wearing the preparation during their daily routine.

Try applying the preparation to your clothing instead of your skin. It won\'t stain, and just a drop on the inside of a shirt cuff should be enough to get results. Some individuals have very active bacteria on their skin which attracts and renders useless the pheromones. Depending on the biochemical make-up of your skin, this could be affecting your success and application to clothing could make a big difference.

That may very well be the reason some people do not have success wearing pheros on the skin. To those, try wearing them on your clothes for some time and let us know if there\'s any difference. Beware not to over-apply. Re-application isn\'t necessary wearing them on clothes.