ok, So i plan on buying P83. what do the pheromone do?
errmm… shouldn’t you already know what it does if you plan to buy it?
seriously, there’s tons of topics on P83 already - use the search function and you’ll find a wealth of information about it! 
Or better yet, buy it at a low dose and test it to see what it does for yourself!
Believe me, it is more fun to figure out what it does than to just blindly believe what others have written about it.
This might work.