Unfortuntely, there isn't enough evidence to conclude that pheromone's can provide results. I'd been seeing some study from U of KY (if memory serves me) touted lately, but I couldn't track down the source to verify it's authenticity. Then there's always the one where women smell sweaty laundry, and tend to pick certain men based on this.
Most studies I've seen references were industry supported which are subject to much suspecion, especially in something that's ethically dubious by nature such as manufacturing pheromone colognes.
IMHO until there is more valid studies, there is little evidence to suggest pheromone colognes have any potentiol to affect one's sex life.