It is well known that there are two kinds of fragrances needed to make perfume, one is called "synthetic perfume", the other is called "natural perfume".

Natural fragrance refers to the raw materials made from the aromatic parts of plants and animals, which are made by simple processing. Most of its forms retain some inherent appearance characteristics of plants, such as fragrant wood blocks, fragrant wood chips, etc. Or is the use of physical methods (steam distillation, extraction, press, etc.) from the natural raw material separated from the aromatic substances, its form is often essential oil, extract, clean oil, balm, tincture, such as rose oil, jasmine extract, vanilla tincture, balm, Tulu resin, narcissus net oil.

There are more than 3600 species of spice plants found in nature, and about 400 species have been effectively utilized. The root of the plant, dry, stem, branch, skin, leaf, flower, fruit or resin can all become incense, for example, jasmine, lavender from the flower of the plant; Cardamom, cumin, chicken tongue fragrance from the fruit; Carabine, wood incense from the root, sandalwood, fall true incense from wood; Borneol, frankincense from resin. Animal spices are mostly secretions or excretions of animals. There are about a dozen kinds, commonly used musk, civet cat incense, beaver and ambergris 4 kinds.

Natural fragrances are widely distributed in the glandular sacs of plants and animals. Natural fragrance has its unique role in fixing aroma, coordinating effect and unique natural flavor, which is incomparable to synthetic fragrance. The main components of natural spices include terpene, aromatic hydrocarbon, alcohol, acid, ketone, ether, ester and phenol.

Two hundred years ago perfumers used only "natural fragrances" because "synthetic fragrances" had not yet been invented. Since the advent of "synthetic spices", perfumers have more money and the preparation cost is much lower than before. Someone thinks the future can need not for sure "natural perfume", use "synthetic perfume" the perfume that can allocate a need to suit all sorts of personage comes out. Strangely, although along with the advance of science and technology, the analysis is more and more advanced, the aroma of spices workers for many "natural flavor" ingredients to understand more and more, some even reached more than 99% of the level, on this basis, the synthetic chemists was synthesized in the laboratory and factory of tens of thousands of all kinds of spices, ingredients, including the nature of the existing and haven't found "artificial flavor", still all have no way to use these but flavourists mix out any kind of "synthetic spices" can really be called "realistic" "natural aroma". The scent of jasmine and rose, most familiar to perfumers, is still discovered every year, synthesized in laboratories and then made in factories. No perfumer dared to say that he had concocted a "jasmine" or a "rose" that was exactly the same as "God's". Any passer-by with a normal sense of smell will be able to detect the difference between his work and natural flowers.

Natural musk not only has a physiological effect on female deer, but also is very sensitive to the sexual response of human, especially female, which is closely related to the sexual cycle. In 1926, Swiss chemist such as zika found that the main fragrance component of musk is musk ketone, and the first synthesis of musk ketone success. Some scholars believe that the pharmacological effect of musk is produced by musk ketone. Japanese scholars in a remote part of Nepal lured musk deer by various musk containing musk ketone as bait but failed to do so, indicating that there are other active substances in raw musk, which is much more complicated than people think.

The same is true of natural ambergris (derived from sperm whales), which has a specific pharmacological effect on the nervous system and heart. It is often used as a tonic, especially as a "hormonal" effect. The chemical composition of ambergris is now known to be more than 90%, most of which can be produced artificially, although these compounds have been successfully used in the preparation of high-grade perfumes, but its aroma and "natural ambergris" is far from the "medicinal" nature.

Natural spices give people "emotional", "sexy" to the perfumer is still an unfathomable mystery. With modern detection instruments - gas chromatograph can detect all the volatile components contained in these spices, most of which "fragrant substances" get more attention from spice workers, there are a lot of fragrance or aroma is very light components are often ignored. Perhaps it is these neglected ingredients that have a direct effect on one's emotions (felt through the vomeronasal organ rather than the usual sense of smell), and they are the most important material basis for modern "aromatherapy" and "aromatherapy regimen".