# How long do pheromones last after applying? Effects faded after 3 hours **URL:** \ **Category:** Men's Pheromone Advice & Field Reports\ **Created:** [September 28, 2008, 2:42pm UTC](https://pheromonetalk.com/t/how-long-do-pheromones-last-after-applying-effects-faded-after-3-hours/20487 "2008-09-28T14:42:23Z")\ **Posts on this page:** 1\ **Showing post:** 7
**Author:** ![ntk23](https://avatars.discourse-cdn.com/v4/letter/n/65b543/32.png) [@ntk23](https://pheromonetalk.com/u/ntk23)\ **Post date:** [September 28, 2008, 7:15pm UTC](https://pheromonetalk.com/t/how-long-do-pheromones-last-after-applying-effects-faded-after-3-hours/20487/7 "2008-09-28T19:15:27Z")
Some estimates of various spray-phero half-lives by MarkL: > [@Successful Composition](https://pheromonetalk.com/t/successful-composition/7618/2): > > The molecules definitely have different ‘weights’. However, all of these molecules must be fairly “light” – right? – or instead of floating on air currents, they would just fall to the floor. So, the first issue is how does stuff become “airborne” – you can have something which sublimates directly from solid to gas (like dry ice) or you can have a liquid which vaporizes (aka volatiles) like water (which slowly evaporates at room temperature) or alcohol (which evaporates much much faster.) And… --- _[View the full topic](https://pheromonetalk.com/t/how-long-do-pheromones-last-after-applying-effects-faded-after-3-hours/20487)._