# Do you only need to apply once a day, or do they wear off as the day progresses? **URL:** \ **Category:** Women's Pheromone Advice & Field Reports\ **Created:** [October 3, 2008, 8:03pm UTC](https://pheromonetalk.com/t/do-you-only-need-to-apply-once-a-day-or-do-they-wear-off-as-the-day-progresses/20775 "2008-10-03T20:03:54Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![ntk23](https://avatars.discourse-cdn.com/v4/letter/n/65b543/32.png) [@ntk23](https://pheromonetalk.com/u/ntk23)\ **Post date:** [October 3, 2008, 8:17pm UTC](https://pheromonetalk.com/t/do-you-only-need-to-apply-once-a-day-or-do-they-wear-off-as-the-day-progresses/20775/3 "2008-10-03T20:17:00Z")
Maybe, and yes. The thing is different [pheromones](https://pheromonelabs.com/) have different rates at which they dissipate from the skin. There are some estimations of pheromone-in-alcohol-spray half life 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… sorry, it is mainly focused on the ones men wear, but you get the idea. Ishine doesn’t last that long and may require periodical top-ups if the situation needs it. -none, which you probably won’t be wearing, lasts for ages; I don’t know about copulins and their half-life. You may develop a feeling for when hits are wearing off and self effects and all that, and might reapply. Or, you might have made such a good impression initially with the pheros that you can get on without reapplying; just let the momentum of the day’s events carry you along… --- _[View the full topic](https://pheromonetalk.com/t/do-you-only-need-to-apply-once-a-day-or-do-they-wear-off-as-the-day-progresses/20775)._