Hey Andy! Welcome to the forum sweetheart!
LOL! it’s okay to be skeptical. I used to be skeptical about it as well, until I gave it a try, and now I’m a total addict, it’s crazy! When you’re trying to feed your addiction and studying at school at the same time lol!
Wow! it’s nice to know a buddy who wears pheros, isn’t it? 
Yep, instant shine is great. It uplifts your mood, and everyone else around you will also seem more upbeat and joyful lol! I’ve never had a bad day with this one, just smiles. Ah! For studying, why don’t you give TAF a try? it makes you concentrate more. I’ve never tried it myself, but I’ve read reports by members who swear by it. TAF induced clarity Here’s a report on it, hope it helps.
Aww, sorry to hear about your stress, I totally understand what stress is. Hell, I’m going through it right now! lol, but since you’re a newbie, I highly suggest you to go with instant shine 1X. Get a to-go bottle of it, see if you like it, 1X is a pretty good dosage, plus take it slow, your body will need to adjust to pheromones, if this is the first time you’re going to use them.
I’m telling this because, if you jump to the 5X per say, it might give you head aches and stuff because you’re body isn’t used to it, so it’s better to get the 1X first, see if it helps (I have the 1X instant shine myself, and it works like charm), if you feel like you need more, you can get it later, plus you wont need to worry about getting head aches because your body will have adjusted to your new signature.
Hope it helped and didn’t sound too confusing lol