Formulas using his education as an herbalist. He has done extensive testing in order to provide the safest vaping option possible. His inspiration spans 3 generations starting with his grandfather who was a doctor. 5:1 Formula diffusers/vapes only contains two ingredients. The herbs include: Anise, Mugwort, Eucalyptus, Wormwood and more. Check him out at www.5to1formulas.com