Does MONQ contain Propylene Glycol?
Our blends do not contain Propylene Glycol. Formaldehyde can be produced when one heats a combined solution of Vegetable Glycerin and Propylene Glycol. It is for this reason, and others, that there is no Propylene Glycol in our MONQ personal essential oil diffusers. There is no lead or nickel in our diffusers, either. Learn more about our ingredients at: MONQ.com/ingredients.