All of our essential oils are therapeutic grade and are of the highest quality available. All of our absolutes are a 10% dilution in organic Jojoba oil with the exception of Rose Otto and Sandalwood being at a 25% dilution. The absolutes and precious oils are all 2ml and come in a 5ml amber glass bottle with a dropper top. The attributes listed for each oil apply only to a therapeutic grade essential oil such as ours. Many essential oils available on the internet have limited therapeutic properties because they are designed for commercial uses such as fragrancing a product.