I sort pheromones by length of time because I want to go out in the evening after work and I want to use the pheromones wisely for my time. If I finish work at 8 p.m. and don't go out until 10 p.m., then it's not worth wearing Overdose or SXD-9, which have a 12-hour effect, because that's when I go to sleep. When wearing Overdose, I need to wear during the day and be around people all day to get the 12 hour effects.

Which pheromones have an effect under 3 hours, so I know which pheromones are worthwhile when I go out for a short time?

I think most products are at least 5-6h.. it wouldn't be good marketing to have a product that lasts so short.

Certain putatives are short lived. The main big mones like Androstenone/Androsterone/Alpha Androstenol and mainstream products aren’t short lived like that. I think Beta Androstenol is the closest thing you’ll get to that short lived. The next best thing is to just wear a very small dose if you want something to feel like it’s short lived.