These 100% natural essential oils are meticulously extracted from plants by cold pressing or steam distillation using the same techniques developed by the medieval Persian physician Avicenna. All Nature s Alchemy high-quality botanical oils are scientifically tested for purity and contain no chemical solvents added alcohol or other extenders. We feature high quality pure oils at competitive prices. Nature s Alchemy Oils are all aromatherapy grade. Please note that we cannot recommend use of any oils internally. Follow the guidance of your alternative health care practitioner in utilizing these fragrances.