All our essential oils including Thyme Linalol, are 100% pure and natural, never any added solvents, filters or synthetic fragrances. You can be sure you are getting the highest quality with any Puressentiel Essential Oil. For use in essential oil diffusers, massage oils or bath water. Do not apply undiluted oil directly onto skin, always dilute in a carrier oil before application. Carry out a patch test beforehand. Puressentiel was created in France in 2005 out of a passion for nature. We create ready-to-use essential oil-based products to support the daily health and well-being of the whole family.