Perfume is like an invisible accessory that tells a story, evokes emotions, and leaves a lasting impression. However, what can bewitch one person may seem less pleasant to another. If you've ever noticed that a perfume doesn't smell the same on your skin as it does on a friend's, you've probably wondered: Why does a perfume smell differently from one person to another?

Here are some key factors that explain this fascinating phenomenon.

1. Skin chemistry: a determining factor

One of the main reasons why a perfume can smell differently from one person to the next is because of the unique chemistry of each person's skin. Our skin is covered in millions of bacteria, bodily secretions, and hormones that interact with the molecules in the perfume. These elements influence how a perfume will react and diffuse.

Amino acids, fats and moisture in the skin can alter the evolution of the fragrance notes. For example, on oilier skin, base notes (like musk or wood) may be more intense, while on drier skin, top notes (like citrus or light florals) may be more pronounced. This is what makes each fragrance experience unique to each individual.

2. Skin pH

Skin pH also plays a big role in how a fragrance develops. More acidic or alkaline skin can change how a fragrance is perceived. For example, people with more acidic skin may perceive certain fragrances to have a sharper or more "citrusy" note, while on neutral skin, the same scent ingredients may appear milder.

Similarly, skin pH can influence the longevity of perfume. On slightly acidic skin, perfumes may tend to evaporate faster, while on skin with a more neutral pH, the perfume may last longer.

3. Lifestyle and diet

Our daily habits can also influence the scent of a perfume. For example, a diet rich in spices or strongly aromatic foods (garlic, onion, curry, etc.) can change the composition of sweat and affect how a perfume unfolds. Similarly, drinking alcohol, smoking, or being exposed to chemicals (such as cleaners or scented lotions) can interact with the perfume and alter its fragrance.

People who engage in intense physical activity or live in hot climates also have different body odors, which can change how a scent diffuses. For example, a scent might be “fresher” or “slightly sweeter” depending on the environment or skin condition.

4. Body heat

Body temperature also plays a big role in how a fragrance is perceived. Warmth helps diffuse the scent molecules, allowing the top, middle, and base notes to be released more quickly. So, the higher your body temperature, the more the fragrance aromas are released. This is why a fragrance may appear more subtle on a cooler person or less noticeable on very warm skin.

This also explains why some perfumes have a different hold depending on the season. In winter, when our skin is colder, a perfume will tend to diffuse more slowly and last longer. In summer, on the contrary, the heat makes the top notes evaporate more quickly, sometimes making the perfume lighter or less intense.

5. Olfactory DNA and sensory memory

Finally, we should not underestimate the impact of our own olfactory perception, which is largely influenced by our DNA and our personal memories. Each individual has a different sensitivity to scents, depending on their genetic heritage. What we perceive as pleasant or unpleasant in a perfume also depends on our sensory experience and our olfactory memory.

For example, someone who grew up in an environment where certain aromas were omnipresent (such as orange blossom, spices or lavender) will tend to associate certain scents with pleasant memories. While another person, less familiar with these smells, may find them more invasive or destabilizing.

6. The perfume creator's choices and the personal "signature"

Some perfume brands play on this individuality by creating fragrances that react specifically to each person's skin. These so-called "personalized" or "signature" perfumes develop according to the biological characteristics of the wearer. The perfumes thus created form a real "olfactory imprint" that becomes unique to each person.

In summary

The reason why a perfume smells differently from one person to the next lies in the combination of factors such as skin chemistry, pH, lifestyle habits and even individual perception of odors. Every body, every skin and every nose is unique, making perfume a true reflection of individuality. That’s why a perfume, whether you like it or not on the shelf, can become your signature scent once it interacts with you.

So, next time you choose a perfume, remember that it’s more than just a fragrance. It’s a personal alchemy that’s unique to you. 🌸