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Fragrance Notes and Perfume Concentration: The Basics

When shopping for perfume, you'll often run into terms like top note, middle note, eau de toilette, and eau de parfum. Here's a basic rundown.

Top note

The scent you smell right after spraying, usually made up of faster-evaporating ingredients. It lasts a relatively short time β€” roughly a few minutes to half an hour β€” and its main job is to create the first impression.

Middle note (heart note)

The scent that emerges gradually as the top note fades. Also called the heart note, it's usually the main body and defining character of a fragrance, lasting longer than the top note and shaping the primary impression for most of the time you wear it.

Base note

The slowest to evaporate and the longest-lasting part of a fragrance, usually built from heavier ingredients. It can linger on skin or clothing for hours or even longer, and is the main source of a perfume's scent once it has largely dried down.

Common concentration types

By fragrance oil concentration, perfumes are roughly grouped into parfum or extrait, eau de parfum (EDP), eau de toilette (EDT), and eau de cologne (EDC). Higher concentration generally means a stronger, longer-lasting scent, but the exact percentage ranges aren't strictly standardized across brands β€” treat them as rough guidelines only.

Sillage and longevity

Sillage refers to how far a scent projects into the air and can be noticed by others, while longevity refers to how long the scent lasts on skin. Both are shaped by a combination of concentration, the specific ingredients, skin type, and ambient temperature and humidity β€” higher concentration doesn't automatically mean proportionally longer-lasting or farther-projecting.

Why the same bottle of perfume can smell different on different people

The ingredients in a perfume interact subtly with an individual's skin pH, oil production, and body temperature, which is why the same fragrance can smell, and last, differently from person to person. When testing a fragrance, it's worth letting it sit on your own skin for a while before judging it, rather than relying only on how it smells on a test strip.

Concentration isn't the only measure of a perfume's quality

Concentration type mainly reflects the fragrance oil ratio and, roughly, how long and how strongly a scent will project β€” it doesn't directly equate to how good a perfume is. Even different concentration versions within the same fragrance line sometimes have slightly adjusted scent profiles, so it's generally better to base your choice on how it actually smells and your personal preference rather than concentration alone.

Frequently Asked Questions

Is eau de parfum better than eau de toilette?

Neither is objectively better β€” they mainly differ in concentration and suited occasion. Eau de toilette tends to smell lighter and works well for everyday or office wear, while higher-concentration perfumes smell richer and last longer, making them a better fit for formal occasions or when you want the scent to linger. The right choice really comes down to personal preference and the occasion.

Should perfume be sprayed on clothing or on skin?

Both are common. Spraying on skin (like the wrists or neck) lets the scent develop more naturally with body heat and lines up more closely with how the top, middle, and base notes unfold. Spraying on clothing tends to last longer, but some fragrances carry a small risk of staining certain light-colored or delicate fabrics, so it's worth testing on an inconspicuous spot first.