These are excellent quality essential oils. I've purchased several of Artizen's oils for treatment and they work very well. I've used them for breathing problems, skin tumors, gout, toothaches and pain. I find USDA certified organic is not necessary to get the job done. These are very effective for therapeutic use.
The Frankincense was been useful in reducing a skin tumor on my dog. After a week of treatment, it's half the size it was. I'm an LMT with training in essential oils and aromatherapy.