Hey Melissa, welcome to the pherotalk forum!
I think you have it spot on concerning everyone having thier own special scent. Andronics Direct has some amazingly wonderful and effective products, but one of these might be a bit more effective on your best friend, where another would be complete dynamite on you personally. Look into some of the journal entries here, and you’ll find member’s own personal experiences complete with which products they used, and exactly how much was applied.
If you have the means, check into getting the introductory kit https://phera.com/
This will get you familiar with most of the common offerings right off quick.
I’d suggest you take a look into Miss Dragon’s journal.
Miss Dragon's Journal! Yay!
She has some great ideas and observations on pheromones, and her posts are a joy to read.
If you are only looking to start off small, likely your best start may be the instant sexiness sprays. Although I haven’t had any experience with these myself, I understand they are truly a wonderful scents with a great bang for your buck, (no pun intended).
Again welcome to the forum, look forward to reading more from you!
Pudleduk