Speaking from experience (I’ve done a few interviews in my time) Instant Gentleman works FANTASTIC in a situation like that. You are seen as an authority, but an approachable one.
I’d agree with how long beforehand, I’d use 1 spray to each side of the neck. Good luck!
I’ve had very good results from Liquid Trust, I obtained from Love Scent, when I need to get compliance out of people. However, it only lasts like 30 minutes, so it’s best applied right before you go see the person.
ig and ishine are a great combo. it’ll give you a polished look. if you know your stuff and have great interview skills you can leave a great impression on the interviewer.
io is a personal call. if you tend to freeze up during interviews, perhaps you could benefit from a spray or two. some of my friends get nervous during interviews and instead of freezing up, they start to blabber. in that case, io would not be good.
IS 4X is quite powerful, IMHO. No more than 1 spray of it. One of the options is to put that spray on your wrists. The self effect of IS is that it will keep you in a happy mood too.
2 sprays of IG should be good. Spray around your neck would be good. IG will boost your confidence and make you appear polished like James Bond.
20-30 minutes is plenty of time to impress anyone. Just present your original self in the interview. Pheros will do their work on their own. You are young, energetic and enthusiastic and I am sure you will do very well. Good luck.