Katrina Rosales
Perfume is a combination of hundreds of different chemical compounds, and its scent can change over time due to various factors. The main enemies of perfume are sunlight, strong electrical light, oxygen, heat, and humidity, which can alter its smell and cause it to spoil. Additionally, factors such as diet, sleep habits, age, body pH level, and even mood can affect how a person perceives a perfume's scent. The same perfume might smell different on two people due to the unique combination of their body chemistry with the perfume's chemical compounds. Furthermore, perfumes can change during shipping due to temperature fluctuations and require time to return to their normal scent.
| Characteristics | Values |
|---|---|
| Perfume change over time | Perfumes are dynamic and evolve slowly over time. The longer it sits, the more it changes. |
| Perfume change due to exposure to oxygen | Oxygen can cause chemical changes in perfume, similar to how oxygen affects the potency of alcoholic beverages. |
| Perfume change due to heat and cold | Heat and cold can affect the way a perfume smells. For example, shipping perfume in extreme heat or cold can cause it to smell different. |
| Perfume change due to other environmental factors | Sunlight, strong electrical light, humidity, and frequent temperature fluctuations can cause a perfume to spoil or change its chemical makeup. |
| Perfume change due to skin chemistry | Skin hydration, moisture levels, and natural body odor can affect how a perfume smells on an individual. |
| Perfume change due to physical activity | Increased body heat and perspiration during exercise can alter the scent of a perfume. |
| Perfume change due to reformulation | Fragrances, even classics, may be reformulated every decade or so, resulting in changes in their scent. |
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What You'll Learn
Skin hydration and body chemistry
Skin hydration plays a significant role in how perfume smells on a person. Proper hydration is essential in making perfume last longer and smell stronger. Research shows that well-moisturized skin can enhance fragrance expression by up to 50% compared to dry skin. This is because fragrance molecules attach themselves to the skin more easily when the skin is well-hydrated, allowing for more balanced scent development throughout the day.
Skin type also influences how perfume smells on a person. Dry skin holds onto fragrances much longer than oily skin. Skin pH levels, which describe how acidic the skin is, also play a key role in determining how a perfume smells when applied. For example, if a perfume has musky base notes, a higher pH level can intensify these scents. On the other hand, if the top notes in a fragrance are citrusy, the acids in the skin can make the scent fade faster.
In addition to skin hydration and type, an individual's body chemistry, influenced by factors such as body temperature, hormone levels, and sweat production, also affects how a perfume smells on them. This is known as "fragrance individuality" or "scent variation," where the chemicals in a person's body interact with the chemicals in the perfume to create unique combinations of scent. For example, certain foods like garlic or curry can alter one's body chemistry, leading to unexpected whiff detection. Similarly, lifestyle choices such as consuming alcohol can alter hydration levels and, consequently, the intensity of a perfume's scent.
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Exposure to oxygen, heat, light, and humidity
Sunlight, heat, oxygen, and humidity are among the primary factors that can cause a perfume to change its scent. Exposure to these elements can accelerate the ageing process of perfumes, causing alterations in their chemical composition and overall quality.
Heat exposure can cause the breakdown of delicate chemical bonds in a perfume's composition, resulting in changes to its scent and longevity. High temperatures accelerate the evaporation and oxidation processes, with fragrance molecules reacting with oxygen and breaking down more quickly. This can lead to a change in the scent, often making it smell sour or rancid over time. The top notes of a perfume, being the most volatile, are particularly susceptible to evaporation in high temperatures, leaving behind the middle and base notes.
Sunlight, whether from natural or artificial sources, can also have a detrimental effect on perfumes. UV rays can break down fragrance molecules, leading to degradation and a change in the scent profile. This is why it is recommended to store perfumes in their original packaging, as it is designed to shield the product from light and heat. Dark or opaque bottles offer additional protection against light, helping to preserve the fragrance for longer.
Humidity can also impact a perfume's chemical stability and longevity. High humidity can cause the perfume to evaporate more quickly, reducing its potency and longevity. This is why storing perfumes in bathrooms is not ideal, as the steam from showers and baths can increase humidity levels. Instead, perfumes should be kept in a cool, dry place, such as a cabinet or drawer, to maintain their integrity and slow down the ageing process.
Additionally, frequent temperature fluctuations can cause volatile components within the perfume to react and change its chemical makeup. Therefore, storing perfumes at a consistent temperature, ideally between 50-70°F, is recommended to prevent alterations in the fragrance composition.
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Shipping and temperature changes
Extreme temperatures during shipping can cause damage to perfumes. High temperatures can cause the liquid in the perfume bottle to expand and leak, while very high temperatures can cause chemical changes in the perfume, altering its scent. Direct sunlight can also break down the chemical structure of a perfume, resulting in a change of scent. This is why it is recommended to store perfumes in a cool, dark place, away from direct sunlight.
However, it is worth noting that heat does not always damage fragrances in the short term. For example, one source mentions that leaving a bottle of perfume in a hot car for a few days should not cause any damage. Similarly, another source mentions that ordering fragrances to Texas in the summer has not resulted in any damage.
On the other hand, cold temperatures can slow down the evaporation of perfume compounds, resulting in a longer-lasting but more subdued scent. This is because the fragrance's heart and base notes become more prominent in colder weather.
To avoid potential damage caused by extreme temperatures during shipping, temperature-controlled shipping is recommended, especially for luxury or delicate perfumes, international shipments, and long-distance ground transport. This ensures that perfumes arrive at their destination without any changes in scent or quality.
Additionally, it is suggested that perfumes be allowed to rest at room temperature for a few days after shipping before being tested. This allows the fragrance to return to its normal state, as temperature changes during shipping can affect the scent.
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Natural ingredients and maturation
Natural ingredients have been used in perfumery since its inception. They are derived from plant materials and include essential oils, absolutes, and CO2 extracts. Natural ingredients can be extracted through steam distillation, cold press, or alcohol extraction. For instance, the raw materials in the green family are natural, fresh, and youthful, while those in the spicy family add warmth, body, and character to a fragrance.
Perfumers began using synthetic ingredients in the late 19th century, allowing them to expand their palettes and create entirely new scents. Synthetic ingredients are created through chemical synthesis, and some have unique scents that do not occur in nature. However, natural ingredients remain crucial in perfumery, with maceration being a key technique for creating natural fragrances.
Maceration involves soaking plant materials in a solvent, usually alcohol, to extract their essential oils and aromatic compounds. The length of maceration varies depending on the plant material and the desired intensity of the extract. A well-executed maceration process can add depth and complexity to a perfume.
Maturation, on the other hand, is the process of letting a perfume sit after bottling, during which chemical reactions occur, creating a more complex and powerful aroma. The length of maturation depends on the desired outcome, with some perfumes benefiting from extended aging. Maturation refines and balances the fragrance blend, allowing the different notes to integrate and evolve over time.
The dynamic nature of perfume means that a freshly made bottle can smell different from an older, matured bottle. This is because perfumes slowly ripen and evolve over time. Additionally, natural ingredients in perfumes can vary in scent due to factors such as soil, weather, and other natural conditions, similar to how a strawberry picked in one year might taste different from a strawberry picked the next.
External factors such as sunlight, strong electrical light, oxygen, heat, and humidity can also affect a perfume's scent over time. For instance, natural vanilla can deepen to the point of colouring the fragrance dark brown. Therefore, proper storage is essential to slow down the ageing process and preserve the desired fragrance.
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Individual perception and preference
Our skin chemistry, including its hydration and moisture levels, influences how a perfume's fragrance molecules interact with our skin and subsequently, the scent that develops. For instance, moisturised skin provides a smoother surface, allowing the perfume molecules to evaporate more slowly, resulting in a longer-lasting and more balanced fragrance. Conversely, dry skin has a rougher texture, causing the perfume to evaporate faster and the scent to be sharper and less durable. Similarly, physical activity increases body heat, causing fragrances to evaporate more quickly and intensifying their projection. Additionally, perspiration and the release of natural body odours during exercise can further modify the scent and create a highly personalised fragrance experience.
Moreover, our subconscious plays a role in shaping our preference for certain scents. Changes in pressure/elevation, temperature, humidity, diet, sleep patterns, age, and even our mood and fatigue levels, can all influence how we perceive a perfume's fragrance. For example, a perfume may smell better on the skin in spring and summer, or after it has been allowed to rest at room temperature for a few days following shipment.
Lastly, individual preference can determine whether one enjoys a perfume straight out of the bottle or after it has matured over time. Some people prefer the freshness of a newly purchased perfume, while others appreciate the subtle changes that occur as the fragrance slowly ripens with age. This maturation process can enhance the scent, especially for perfumes with strong natural notes, as the ingredients' scent may vary due to factors such as soil, weather, and other natural conditions.
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Frequently asked questions
Perfumes are made up of hundreds of different chemical compounds, so there isn't one scent that works for everyone. The chemicals in our bodies interact with the chemicals in the perfume, creating unique combinations of scent.
A perfume's scent can change over time due to oxidation and exposure to heat, oxygen, light, and humidity. Perfumes with heavy base notes that are nutty or woody tend to last longer than floral scents.
Skin hydration or moisture influences how a perfume smells on an individual. Moisturized skin tends to have a better ability to retain fragrance molecules, allowing them to evaporate more slowly and develop more gradually over time.
Changes in temperature, humidity, and other environmental factors due to travel or change of seasons can cause differences in how a perfume smells.
