With your training done, please don’t waste your time in buying non professional gel polishes. You and your clients deserve better than that, and with so many professional systems available, you have so much choice and little excuse.
Do your research, and do it well. Searching the Nail forum at...
Welcome to Salon Geek.
I’m linking a couple of recent similarly related threads to get you started :)
These threads should help to give you a few ideas :)
Teeth whitening is actually illegal, unless you’re a qualified dentist, no matter how convincing these companies portray the results or how they continue to convince therapists to add the treatment to their portfolio.
The Guild has a classified ads page where you can advertise for free if you’re a member. Alternatively, try dedicated selling pages on Facebook.
Selling and buying of products, equipment or other items however is not allowed on this website, so I’m closing your thread here.