For the price I figured I'd give them a go but boy was that a mistake. My mum and sister both use oil diffusers with 100% natural oils. Upon opening this package I could already smell something that really didn't smell natural. One by one I opened the bottles and smelt the top. They almost all smelt chemically treated and terrible. I compared the bottle of lavender with a 100% natural one, and there was a huge difference between the two.
I bought two sets, one for me and one as a gift. They're both going back. Do yourself a favour and buy good oils. You get what you pay for. New directions seems to have some great ones at a good price, it's what I use now.