Aromatherapy Guild is True Aromatherapy™ for wellness. Every product we make at Aromatherapy Guild is well-researched for evidence that it works. That includes not only the careful study of an ingredient's traditional use, but of its effectiveness as demonstrated in modern clinical studies, as evidenced in its natural biochemistry, and in its practical use. Discovering what works, and using it well. That's True Aromatherapy.