Natural and synthetic raw materials in perfumery: differences and why they are used together

In everyday language, when people talk about perfume, “natural” and “synthetic” are often presented as two opposing worlds: authentic raw materials on one side and artificial laboratory-made substances on the other. For a perfumer, this opposition is too simple and, above all, not very useful.

A composition does not automatically become better because it contains more naturals, nor more modern or higher-performing because it contains more synthetic molecules. Natural and synthetic materials are different tools, with different olfactory and technical characteristics. Quality comes from the choice of materials, their dosage, the structure of the formula and the idea behind the perfume.

This is why high-quality contemporary perfumery normally uses both categories. Not because one has to “correct” the other, but because each offers possibilities that the other cannot reproduce in exactly the same way.

What does “natural raw material” mean in perfumery?

Natural raw materials are obtained from botanical or, more rarely, animal sources through processes such as distillation, expression, solvent extraction, CO₂ extraction or other appropriate methods.

In modern perfumery, this mainly includes:

• essential oils;
• absolutes;
• resinoids;
• extracts;
• concretes and intermediate products;
• certain fractions or rectified grades obtained from natural materials.

Many natural raw materials are extremely complex chemical mixtures. An essential oil is not “one molecule”: it may contain dozens or hundreds of constituents in different proportions.

This complexity is one of the reasons for their olfactory richness. A good natural material can show facets, transitions and subtle movements over time that cannot be described adequately with a single word such as “rose”, “bergamot” or “vetiver”.

You can explore our selection of natural raw materials for perfumery in the catalogue.

What does “synthetic” mean?

A synthetic perfumery material is obtained through a controlled industrial process, which can include chemical synthesis, transformation of precursors or, increasingly, biotechnological processes.

But an important distinction appears immediately: “synthetic” does not necessarily mean “a molecule that does not exist in nature”.

Some molecules used in perfumery also occur naturally in flowers, fruits, woods or essential oils, but are produced industrially because this can provide more consistent quality, controlled purity or quantities that natural extraction could not supply practically.

Other molecules are genuine creations of fragrance chemistry and have opened olfactory territories that do not correspond directly to a natural raw material: modern musks, woody ambers, aquatic and ozonic effects, highly diffusive materials and many other families.

For a deeper introduction, read Aroma chemicals: what they are and how to use them in perfumery or explore the Synthetics (Aroma Chemicals) collection.

Natural does not mean “one substance”, and synthetic does not always mean “one molecule”

This is another common oversimplification.

Many naturals are complex mixtures, but isolated substances and fractions can also be obtained from natural sources. At the same time, not everything a perfumer buys as a synthetic product is necessarily one pure molecule: there are commercial specialties, bases and accords made from multiple ingredients.

A fragrance base can also contain both natural and synthetic materials. “Base”, “natural” and “synthetic” therefore describe different aspects of a material and should not be used as synonyms.

The most important difference for the perfumer: complexity versus precision?

This is a useful first approximation, as long as it is not treated as an absolute rule.

Natural raw materials often offer intrinsic complexity: several facets are already present inside one material. A single essence can simultaneously contain fresh, green, floral, earthy, spicy and woody aspects.

A synthetic molecule often allows the perfumer to work with greater functional precision. It can introduce a particular kind of diffusion, woody texture, musky effect, floral volume or fruity nuance without necessarily adding all the complexity of a natural extract.

This is precisely what makes the two categories complementary.

Why can a natural raw material vary from batch to batch?

A plant is not an industrial reactor. Its profile can be influenced by:

• geographic origin;
• botanical variety;
• climate and seasonal conditions;
• harvest timing;
• the part of the plant used;
• drying and storage conditions;
• extraction and fractionation method.

Professional producers work specifically to control this variability through specifications, analysis, blending of lots and standardisation where appropriate. Even so, a certain degree of variability remains a natural feature of many botanical products.

This is not necessarily a defect. It can be part of their olfactory interest. It does, however, become something to manage when the same perfume needs to be produced consistently over time.

Why are synthetics important for repeatability?

A well-specified synthetic raw material generally allows the perfumer to work with tighter parameters for purity and composition. This helps make the behaviour of the formula more controllable from one batch to another.

But again, this should not be made absolute: two commercial grades with the same CAS number may not have an identical olfactory profile. Purity, isomer distribution, stabilisers and manufacturing process can all affect perception.

This is why a perfumer should not choose a material by CAS number alone. The manufacturer, trade name and actual behaviour of the grade being used also matter.

Are synthetics used only to make perfume cheaper?

No. Availability and cost are certainly real factors in industrial formulation, but reducing synthesis to “a cheaper substitute for natural materials” misses a large part of modern perfumery.

Many synthetic materials are used because they offer specific olfactory effects that naturals do not provide in the same way: enormous diffusion, transparency, clean musks, woody ambers, mineral, marine or ozonic effects, and particular abstract textures.

A synthetic material can also be more expensive than many natural raw materials. Price does not define the category.

Can a synthetic material perfectly replace a natural one?

Not necessarily.

If a formula contains a complex essential oil, replacing it with only one of its major molecules will almost always change the result. The molecule may reproduce an important part of the odour, but not the entire spectrum of constituents that builds the natural material.

This is why natural effects are often reconstructed using accords made from several molecules, sometimes together with a small amount of the natural material itself.

At the same time, a reconstruction does not have to imitate nature perfectly to be interesting. It can deliberately be brighter, cleaner, more abstract or more stable in its olfactory effect.

Why use naturals and synthetics together?

Because the result can be richer than what either category offers on its own.

A natural can contribute organic complexity and a signature that is difficult to build from scratch. Synthetic molecules can then:

• amplify particular facets;
• open the composition and increase diffusion;
• build continuity between top, heart and base;
• make a note more legible;
• create contrast;
• add volume without heaviness;
• introduce effects that do not exist in the starting natural material.

A simple example: a natural floral material can have great richness, while diffusive synthetic materials can give it more space and air. A natural wood can contribute depth and texture, while a woody amber can extend its presence and modify its projection.

The logic is not “natural + synthetic = compromise”. It is material + function = construction of the formula.

Is natural always safer?

No. Natural origin is not a toxicological category.

Many natural raw materials naturally contain allergenic substances or constituents subject to restrictions. Some citrus materials can contain phototoxic constituents; essential oils and absolutes can contribute Limonene, Linalool, Citral, Eugenol and many other fragrance allergens.

Conversely, a synthetic molecule can have a very favourable safety profile or may require specific precautions and restrictions. It depends on the substance.

The professional question is therefore not “Is it natural or synthetic?” but What material is it, at what concentration is it used, which constituents does it contain and which rules apply?

That is also why technical documents must be kept distinct. See Fragrance allergens in perfumery: how to read a declaration and calculate them in the finished product and IFRA Category 4: how to read and calculate limits correctly.

Is natural always more sustainable?

This cannot be stated as a general rule either.

A natural raw material may depend on significant agricultural land, water, energy, seasonal availability, very low plant yields and transport from specific geographic regions. In other cases, a well-managed natural supply chain can support local territories, cultivated biodiversity and producer communities.

A synthetic material can sometimes reduce pressure on a rare botanical resource, but its production also requires feedstocks, energy, chemical processes and waste management.

Sustainability therefore needs to be evaluated case by case and across the full life cycle, not inferred automatically from the words “natural” or “synthetic”.

Can you make a perfume using only natural raw materials?

Yes. Fully natural perfumery exists and is a legitimate aesthetic and technical choice.

However, working only with naturals means accepting a different palette. Some effects typical of contemporary perfumery — certain musks, woody ambers, some floral transparencies, marine, ozonic or abstract effects — cannot be achieved in exactly the same way.

In addition, “100% natural” does not remove the need to assess allergens, restrictions, stability and the safety of the finished product.

A natural perfume can therefore be magnificent, but it is not automatically more authentic, safer or higher in quality. It is simply built within a different system of possibilities and constraints.

Can you make a perfume using only synthetic materials?

Yes, that is also possible. A fully synthetic formula can be refined, complex and artistically interesting.

But here too, the category does not guarantee the result. A formula made from many expensive and technically sophisticated molecules can still feel flat or confused if the construction is weak.

Quality is not found in the percentage of natural versus synthetic material. It is found in the formulator’s choices.

How to study naturals and synthetics in a useful way

1. Study the natural material on its own. Try to recognise not only the main theme but also its secondary facets.
2. Study related molecules. Observe which parts of the natural effect they recall and which parts they transform.
3. Build a simple accord. Start with a few materials instead of immediately hiding them in a complex formula.
4. Run A/B tests. Natural alone, synthetic alone, and a combination of the two.
5. Evaluate over time. Opening, heart, drydown and persistence can tell very different stories.
6. Record the function. Not only “What does it smell like?” but “What does it change in the formula?”

How should you choose in a formula?

Do not start with the question “Should I use natural or synthetic?” Start with the effect you want to achieve.

Ask yourself:

• Do I need complexity or precision?
• Do I want a recognisable botanical signature or a more abstract effect?
• Do I need more diffusion?
• Do I need to increase continuity or persistence?
• What level of batch variability can I manage?
• Which restrictions and allergens apply?
• What role does this material really play in the concept?

At that point, origin becomes one useful piece of information rather than an absolute measure of quality.

Conclusion

Perfumery is not a battle between nature and the laboratory.

Natural raw materials bring unique biological and olfactory complexity. Synthesis has given perfumers a degree of precision and creative freedom that radically transformed the language of perfumery.

Using them together means working with a broader palette. Real expertise lies in understanding what each material can do, how much is needed and why it belongs in the formula.

You can explore the Naturals and Synthetics (Aroma Chemicals) collections separately, but in formulation the most interesting question remains the same: What is the function of this material in the perfume I am building?