Hey sweetie!
Welcome to the forum! omg, you’re a dr. huh!? That’s awesome!
I usually tell every new member to try instant sexiness. Imho, it’s a must, however there are 2 types, there is is/a and is/b
Here’s a breakdown of both, and it may help you make your decision on which you may want to try.
Is there any other specific reactions or self effects you have in mind? if you mention if others will recommend you more stuff 
Have fun!