Karin Opitz-Kreher has qualifications in aura soma, aura soma bodywork, and foot reflex zone reharmonization. She works in her own wellness clinic, specializing in stress reduction and harmonization. Karin has been making use of traditional knowledge of essential oils and passing this on to others in workshops since 2013. Jutta Schreiber, D.M.D., has been working as a dentist for more than thirty years, specializing in holistic and naturopathic approaches at her own clinic in Neubi berg, Germany. Her methodology includes materials testing and exclusion, identifying interference zones, homeopathy, anthroposophical techniques, bioresonance, matrix rhythm therapy, and much more. She has also been using essential oils successfully in her clinic for many years. Since 2022 Jutta has worked with various dental practices as a consultant on dental and oral health, applying her knowledge and expertise in the field of essential oils.