Hi m189 & nice to have you as a member of Pherotalk 
Good to hear you have an interest in pheros & wish to learn more about it I see you have a bio major there wow, you must be good in phero knowledge then. Feel free to check the men section for more info about pheros there & do ask any of the experienced ones there if you have any questions.
Here is a link about that explained a lot about the pheros here> Mens Pheromone Guide revised 6/15 Don’t mind i ask if you are getting pheros, what do you hope to achieve by using them & what kind of effects you hope for?
I hope you will enjoy learning more info here & wish you all the best if you decide to get & test out the pheros here