These fragrances are composed and compounded using primarily, or solely, naturally-derived ingredients. Due to advancements in processing, many natural isolates are now available, allowing perfumers access to molecules such as vanillin, a molecule in vanilla which typically is obtained synthetically.
There are arguments both for and against natural perfumery, health-wise as well as scent-wise. In any case, the creative challenge of having a ‘limited palette’ without synthetic materials can rally the perfumer, allowing for some fantastic natural fragrances to be composed.
The old argument that natural fragrances have no longevity has also been refuted.
There is something wonderful about knowing that all the magnificent smells coming together inside a particular bottle of perfume were all created by nature, but harnessed by the endless artistic creativity of Man.