Fragrances have a profound influence on our lives. They surround us throughout the day, evoking memories, transmitting emotions, and even altering our mood. The power of fragrances goes beyond their scent; they connect us to unique sensory experiences. From perfumes and colognes to everyday products such as creams and shampoos, the use of fragrances is widespread. However, not all fragrances are equal in terms of their longevity, intensity, and effect. In this article, we will explore the different types of fragrances based on their durability, their impact on our daily lives, products with distinctive fragrances, and how the longevity of a fragrance can evaluated through specialized testing methods.

Types of Fragrances Based on Durability
The longevity of a fragrance depends on the concentration of aromatic oils and other components in its formula. These oils are responsible for the intensity and lasting power of the scent on the skin or hair. Fragrances are generally divided into the following categories:

1. Perfume: This is the most concentrated and, therefore, the longest-lasting category. With an aromatic oil concentration ranging from 20% to 30%, it usually lasts between 8 and 12 hours, depending on factors such as body temperature and skin hydration. It is the most luxurious and expensive option, but also the most persistent one.
2. Eau de Parfum: With a concentration of 15% to 20%, this type of fragrance lasts approximately 6 to 8 hours. Though still strong, it is less intense than pure perfume and it is ideal for those seeking a long-lasting scent without being too overpowering.
3. Eau de Toilette: Containing between 5% and 15% oil concentration, these fragrances typically last 3 to 5 hours. They are fresh and light, perfect for daily use or warmer climates where a more intense fragrance could be overwhelming.
4. Eau de Cologne: The lightest of all, with only 2% to 4% oil concentration, colognes generally last only 2 to 3 hours. They are often used for a quick refresh and don’t have a prolonged impact.
   
   

The Impact of Fragrances on Our Daily Lives
Fragrances play a significant role in our emotional well-being. Various studies have shown that scents can influence our mood, energy levels, and even how others perceive us. A fresh, light aroma can make us feel revitalized at the start of the day, while a warm, spicy scent can convey elegance and sophistication at an evening event.

Beyond perfumes, fragrances in products like shampoos, lotions, and laundry detergents can enhance our sensory experience. These products can add a personal touch to our daily routines, reinforcing our olfactory identity and providing a sense of comfort and well-being.

Products with Distinctive Fragrances
There are certain products that stand out for their memorable and distinctive scents, making them highly identifiable. These include:

• Body lotions and creams: Many of these not only care for our skin but also leave a light fragrance that lingers throughout the day.
• Shampoos and conditioners: Hair care products with unique fragrances can provide a sensory experience that lasts beyond washing, making hair smell fresh and appealing for hours.
• Scented candles: Designed to fill spaces with enveloping aromas, candles can transform a room’s ambiance, creating relaxing or energizing atmospheres depending on the type of fragrance.

These products with distinctive fragrances have the power to leave a lasting imprint on our sensory memory, becoming an essential part of our olfactory identity.

Evaluating the Durability of a Fragrance: Methods and Tools

The longevity of a fragrance is one of the most important aspects when evaluating its quality. At Zurko Research, we’ve developed specific testing methods that help determine how long the scent lasts on the skin, hair, or in the air and therefore, ensuring that a fragrance meets expected standards. Below are some of the main aspects to consider in these studies:

• Control Points: Different timepoints of the day are selected to measure the intensity of the fragrance, such as upon application, after 1 hour, 3 hours, 6 or 8 hours, and even up to 12 hours, depending on the type of fragrance. This allows for observation of how the fragrance evolves and at what point it begins to significantly fade. These control points should be determined through close collaboration with the customer as they are the ones who know the most about the formulation to be tested as well their marketing expectations.
• Evaluation by Technical Staff: Trained evaluators, or “sniffers,” with high olfactory sensitivity, evaluate the intensity of the fragrance at various times of the day, recording how the scent is perceived over time. These evaluators are essential for providing precise and objective results regarding the fragrance’s longevity. They are trained and periodically re-evaluated to correctly detect changes in odor intensity.
• Panelists and Test Protocol: Depending on the product and fragrance type to be evaluated for durability, a tailored protocol must be implemented, considering factors such as skin type, skin condition, and hair length, but also the product application method, distance from which the odor test has to be performed, clothing to be worn, etc. This detailed approach ensures that the fragrance performs consistently across different users and conditions.

Fragrances are much more than a simple accessory in our daily routine. Their ability to influence our emotions, improve our mood, and leave a lasting impression is undeniable. Choosing the right type of fragrance, evaluating its durability, and understanding its impact in everyday products are crucial factors that shape how we experience and use fragrances in our daily lives. Thanks to specialized evaluation techniques, we can be confident that the fragrances we choose will not only accompany us throughout the day but will also do so reliably and effectively.

The CosmeticLAB of Mérieux NutriSciences, a pivotal branch of the global Mérieux NutriSciences Corporation, excels in the cosmetic sector with a commitment to ensuring product efficacy, safety and quality. Leveraging state-of-the-art technology and stringent testing methodologies, we offer comprehensive services, including chemical, microbiological, and efficacy evaluations. Our expertise also extends to sensory and consumer studies, ensuring that cosmetics meet both industry standards and end users expectations. As pioneers in cosmetic testing, we are dedicated to innovation, sustainability, and client-focused solutions. This commitment is encapsulated in “Our science, your beauty”, reflecting our dedication to enhancing beauty through scientific excellence.