What is the principle of odour neutralization?

Neutralizing odours with essential oils is a physical-chemical reaction, also known as the ‘Van Der Waals’ principle.


The odour molecules of the active substance in the vapour phase react with the stench molecules. This makes that most stench molecules are directly converted into not scented molecules. Thereby 70-90% of the smell is aborted.


Any remaining odour is neutralized by the Zwaardemaker-principle, so that the stench molecules are no longer perceived by the nose.


The end result, depending on the load of bad smell, is a neutral odour perception, also called hedonic value = 0.