Arkopharma Arko Essentiel Purifying Mixture for Diffusion 15ml is a mixture to diffuse, combining essential oils of eucalyptus radiata, rosemary and siberian fir. The combination of the 3 oils contributes to sanitize the air and to remove bad odors.Eucalyptus radiata is well-known for its sanitizing properties, rosemary enhances respiratory comfort and siberian fir contributes to deodorize the air.