Antonio Mcgowan
A perfume fixative is an essential ingredient in perfume-making that helps to prolong the aroma and prevent it from dissipating too quickly. It does this by equalizing the vapour pressures and volatilities of the raw materials in the perfume oil. Fixatives can be natural or synthetic substances, with natural fixatives being plant-derived resinoids, and synthetic fixatives being odorless or almost odorless substances with low vapour pressure. Examples of fixatives include benzoin, labdanum, myrrh, olibanum, storax, tolu balsam, and vanilla.
| Characteristics | Values |
|---|---|
| Definition | A substance used to equalize the vapor pressures of raw materials in a perfume oil, increasing the perfume's odour tenacity. |
| Purpose | To increase the time for which the scent of a perfume lasts. |
| Types | Natural fixatives (resinoids, terpenoids, polycyclic ketones); Synthetic fixatives (substances of low volatility, odorless solvents). |
| Examples | Natural: Ambergris, Civet, Benzoin, Sandalwood, Vanilla; Synthetic: Fixative BMV, Diphenylmethane, Dipropylene Glycol (DPG), Ambroxide, Benzyl Salicylate. |
| Selection | Perfumers must carefully select the correct type of fixative to manipulate aroma and longevity. |
| Application | Added to perfume to stabilize and prolong the aroma by slowing the evaporation of volatile compounds. |
| Market | The global market for fragrance fixatives was estimated at USD 1.85 billion in 2022 and is expected to grow by 2030. |
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What You'll Learn
Natural vs synthetic fixatives
Natural fixatives are additives used in perfumes and cosmetic products that are secreted from plants that produce a thick, sticky substance known as resin. Some examples of natural fixatives include benzoin, frankincense, myrrh, olibanum, labdanum, storax, tolu balsam, castoreum, musk, civet, and ambergris. Natural fixatives were once widely used to increase the longevity and stability of perfumes. However, due to the near extinction of the animals from which these substances are derived, they are rarely used today because of strict environmental protection laws.
Synthetic fixatives, on the other hand, are created in laboratories and offer a more sustainable, consistent, and ethical alternative to natural fixatives. Synthetic fixatives include substances of low volatility and virtually odourless solvents with very low vapour pressures. Examples of synthetic fixatives include Dipropylene Glycol, Cyclopentadecanolide, Ambroxan (a synthetic alternative to ambergris), Benzyl Salicylate, and Fixative BMV. These synthetic compounds can be used to create a wide range of fragrance profiles, from sweet and seductive to ambery and cedar-like aromas.
The choice between natural and synthetic fixatives is an important consideration for perfumers. While natural fixatives offer unique and complex scent profiles, they may be difficult to source sustainably and ethically. Synthetic fixatives, on the other hand, provide consistency, longevity, and the ability to create a diverse range of fragrances at a more economical cost.
In conclusion, both natural and synthetic fixatives play a crucial role in perfumery. Natural fixatives provide unique, rich scents, while synthetic fixatives offer sustainability, consistency, and the ability to create diverse fragrance profiles. The selection of the appropriate fixative depends on the desired fragrance outcome, sustainability practices, and economic considerations.
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Examples of natural fixatives
Natural fixatives are additives used in perfumes and cosmetic products that are secreted from plants that produce a thick, sticky substance known as resin. They are used to extend the lifespan of a fragrance by slowing down the evaporation process.
- Benzoin is a rich, sweet, and smooth resinoid with a touch of cinnamon. It is used for both feminine and masculine fragrances.
- Frankincense is a piney and spicy resinoid.
- Myrrh is a woody, warm, and slightly sweet resinoid with excellent therapeutic and fixative properties.
- Olibanum is a fresh, deep, and lemony resinoid.
- Labdanum is a sugary, fruity, and dry resinoid.
- Storax is a sugary resinoid with vanilla nuances.
- Tolu Balsam is a fresh, sweet, and fruity resinoid.
- Civet is a pungent, velvety, and smooth resinoid with a strong, seductive aroma.
- Oakmoss has a rich, earthy, and sensual aroma, adding a woodsy tone to fragrances.
- Cedarwood has a warm, woody, and slightly sweet aroma, helping to anchor the fragrance.
- Tonka Bean has a scent reminiscent of freshly mown hay and sweetgrass with vanilla overtones.
- Vanilla is a sweet, creamy, and familiar aroma with calming and relaxing qualities.
- Sandalwood has a deep, soft, sweet, woody balsamic fragrance with excellent tenacity and strong fixative properties.
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Examples of synthetic fixatives
Synthetic fixatives are artificially created ingredients used in perfumes to extend the life of a fragrance. They are often more stable and provide greater control over a scent's longevity compared to natural fixatives. Synthetic fixatives are also more consistent, versatile, and economical. They are commonly used in modern perfumery due to their ability to stabilize volatile fragrance components.
- Musks are synthetic fixatives that can mimic the qualities of natural fixatives. Galaxolide, for example, has a clean, sweet scent and is used to add depth and enhance the staying power of perfumes.
- Ambroxan, derived from sclareol, has an ambergris-like scent and is known for enhancing the longevity of fragrances. It is a synthetic version of gray amber, which has been replaced due to legal issues.
- Iso E Super is a popular molecule with a subtle, woody, and amber-like aroma. It is used as a fixative and to add a smooth, velvety texture to a fragrance.
- Dipropylene Glycol, Cyclopentadecanolide, and Benzyl Salicylate are synthetic alternatives to natural fixatives that are more sustainable and ethical.
- Fixative BMV is a powerful, almost odorless synthetic fixative that can be used at a percentage of up to 10%. Its only drawback is that it is not soluble in alcohol.
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The role of fixatives in perfume
Fixatives are essential ingredients in creating successful perfumes. They are substances used to equalize the vapour pressures of the raw materials in a perfume oil, thus increasing the odour tenacity. In simple words, fixatives increase the time for which the scent of a perfume lingers.
There are both natural and synthetic fixatives. Natural fixatives are additives used in many perfumes and cosmetic products that are secreted from plants that produce a thick, sticky substance known as resin. These include benzoin, frankincense, myrrh, olibanum, labdanum, storax, tolu balsam, castoreum, and musk. Natural fixatives such as ambergris and civet were once widely used, but due to the risk of animal extinction, they are rarely used today.
Synthetic fixatives are also effective and widely used. Examples include diphenylmethane, dipropylene glycol (DPG), cyclopentadecanolide, ambroxide, and benzyl salicylate. These substances have low volatility and are often nearly odourless, with a very low vapour pressure. Synthetic fixatives are more economical, consistent, and ethical than natural alternatives, as the natural collection process often involves killing or capturing animals.
The choice of fixative depends on the desired aroma and longevity of the perfume. Some fixatives blend more seamlessly into a perfume than others, such as vanilla, sandalwood, and civet, which are widely used by renowned perfumers. It is important to select the correct type of fixative to manipulate its aroma and longevity effectively.
Base notes of a fragrance, such as sandalwood, oakmoss, and vanilla bean, can also act as fixatives. These base notes have a good concentration of ingredients, enhancing the initial impression and increasing longevity.
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How to choose the right fixative
Choosing the right fixative is essential in creating a successful perfume. Fixatives help to retain and stabilize a fragrance, ensuring that it lasts longer on the skin or clothing. Here are some key considerations when selecting the right fixative:
Natural vs. Synthetic Fixatives
Perfumers can choose from a range of natural and synthetic fixatives, each offering unique advantages. Natural fixatives, derived from plants, animals, or minerals, were traditionally used to enhance the longevity and stability of perfumes. Examples include sweet and earthy ambergris, velvety civet, and plant-based resinoids such as benzoin and myrrh. However, due to environmental concerns and the near-extinction of some animal species, modern perfumers often opt for synthetic alternatives. Synthetic fixatives, such as Fixative BMV, are more economical, consistent, and ethically viable options that can effectively prolong the aroma of a fragrance without significantly altering its scent profile.
Compatibility with Fragrance
The chosen fixative should complement and enhance the fragrance without overpowering it. Some fixatives, like vanilla, sandalwood, and benzoin, are known for their seamless blending abilities, making them popular choices among perfumers. They provide a subtle touch of sweetness, creaminess, or spice without overwhelming the other notes in the composition. When selecting a fixative, consider its olfactory behavior and how it will interact with the other ingredients in the perfume.
Aroma Manipulation
Fixatives play a crucial role in manipulating the aroma and longevity of a fragrance. They can slow down the evaporation of volatile compounds, anchoring the scent to the skin or fabric. When choosing a fixative, consider the desired scent profile and the volatility of the raw materials used in the perfume. Non-volatile substances, for example, are often used as fixatives due to their mild aroma and compatibility with other fragrances, helping to stabilize and prolong the overall aroma.
Concentration and Quality
The quality and concentration of the fixative are also important factors to consider. Opt for high-quality fixatives, whether synthetic or natural, and ensure they are well-concentrated. A highly diluted fixative may diminish the effectiveness of the perfume and reduce its longevity. Additionally, be mindful of the overall concentration of the perfume composition to ensure the fixative's efficacy.
Testing and Experimentation
Experimentation is key when choosing the right fixative. Perfumers often create multiple iterations of their fragrances, testing different fixatives and concentrations to find the perfect balance. Compare the scent's performance and longevity with and without a fixative to gauge its effectiveness. This iterative process allows for a deeper understanding of how fixatives interact with other ingredients and helps perfumers make informed decisions.
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Frequently asked questions
A fixative is a substance used to increase the length of time a perfume's scent lasts. They do this by equalizing the vapour pressures of the raw materials in a perfume oil.
Fixatives can be natural or synthetic. Natural fixatives are called resinoids, which are additives secreted from plants that produce a thick, sticky substance known as resin. Synthetic fixatives are artificially made and are more economical, consistent, and ethical than their natural counterparts.
Examples of natural fixatives include benzoin, labdanum, myrrh, olibanum, storax, tolu balsam, and vanilla. Synthetic fixatives include substances of low volatility like diphenylmethane and dipropylene glycol.
