For one thing, the customer service of this seller is excellent. I had a lavender oil leak, and they promptly replaced the lavender and sent an extra oil to make up for the inconvenience. So I would recommend this seller a dozen times over.But now, let me give you the lowdown on these oils:TLDR: These are strong, stable, well sealed, well packaged, and effective oils. The eucalyptus and peppermint have all but cured one of my relative’s migraines, and the tea tree oil saved my relationship with my roommate when I accidentally left wet clothes in the washer for a week. (It was smelling good as new by the time I was done)Now for the details….if you’re willing to read them (Highly recommended)ARE THESE OILS FAKE?First of all, define “fake?” There are several posts on here talking about how these oils were proven to be a scam. One of the methods that they use to define purity is Gas Chromatography. I used this when studying organic chemistry, and basically, you run the oil through a machine, and it gives you a graph with “blips” where certain chemicals react. I have attached one of these graphs so that you can see an example. It’s the graph of the Basil’s essential oil. (Also, everything is a chemical, so please don’t say “I want my essential oils free of chemicals.) If a substance is “pure,” you should expect “blips” at a very specific pattern in the graph with NO deviations, but apparently, with these oils, there are “blips” where there shouldn’t be.That being said, these are authentic essential oils, but in order to distill them to be 100% pure, it takes time, patience, and frankly, luck to keep them from decomposing into a chemical you don’t want (which means extra “blips” on the graph). Trust me, I’ve distilled orange oil and clove oil in ochem lab (never again….please God)So you may notice you’re not paying a premium. This is because these oils were not painstakingly distilled to 100% purity. It costs exponentially more for just a little more purity, so that’s why these are so cheap. They could be 97% pure, but it takes tons more time and money to get them to 100%, so why not just enjoy them? I’ve been using them for months for aromatherapy, and have experienced nothing but healing. Obviously if you’re going to be consuming them, you should go for something more expensive. But these are PERFECT for aromatherapy, and you shouldn’t pay a premium if you’re just using them for bath bombs and homemade cleaner.I hope this helped you guys. I love these oils, and if they’re good enough for me, they are good enough for you!