The short version
- The letters are about oil strength. Roughly: Cologne (EDC) 2–4%, Eau de Toilette (EDT) 5–15%, Eau de Parfum (EDP) 15–20%, Parfum / Extrait 20–30%. More oil generally means more longevity and a heavier feel.
- But "stronger" isn't the whole story. Houses usually reformulate across concentrations rather than just add oil — different notes, different balance. The same name can smell like a noticeably different fragrance.
- Higher isn't always better — or pricier. Plenty of people prefer an EDT to its EDP. On our own shelves, Dior Sauvage Parfum decants from $3.99 while the EDP is $4.99 — the "higher" concentration is the cheaper one.
- The label doesn't tell you how it wears on you. Skin chemistry decides. The only reliable test is on your own skin, which is exactly what a decant is for.
The abbreviations on a fragrance bottle — EDC, EDT, EDP, Parfum, Extrait — describe how concentrated the perfume oil is in the alcohol-and-water base. That much is simple. What trips people up is assuming a higher concentration is just "the same scent, louder." It usually isn't.
The concentration ladder
| Name | Typical oil | Feel |
|---|---|---|
| Eau de Cologne (EDC) | ~2–4% | Light, fleeting, splash-and-go |
| Eau de Toilette (EDT) | ~5–15% | Fresh, brighter top, moderate life |
| Eau de Parfum (EDP) | ~15–20% | Rounder, richer, longer |
| Parfum / Extrait de Parfum | ~20–30%+ | Dense, close-wearing, long-lasting |
These are industry-standard approximations — houses rarely publish exact percentages, and there's overlap between brands. Treat them as a rough guide to weight, not a promise of quality.
What actually changes
Three things move as you go up the ladder:
- Longevity and projection usually increase — more oil, more to smell, for longer.
- The character shifts. A higher concentration often leans warmer, sweeter or deeper, because the base notes carry further while the airy top notes matter less.
- The formula itself changes. This is the part people miss: an EDP is frequently a reformulation, not a stronger dilution of the EDT. Different materials, different ratios. That's why fans of a fragrance's EDT sometimes dislike its EDP — it isn't the scent they loved with the volume turned up; it's a different arrangement of the same theme.
The "stronger is better" myth
Higher concentration is not automatically the one to buy. An EDT's brighter, airier profile is the point of a fresh summer scent — an EDP version can feel heavy and wrong in July. And price doesn't track concentration reliably either. It comes down to what you want the fragrance to do, and how it reads on your skin.
One fragrance, four concentrations
Dior Sauvage is the clearest lesson we can point at, because we stock the whole ladder and they genuinely wear differently:
| Version | In short | Decant from |
|---|---|---|
| Sauvage EDT | Brightest, peppery-fresh, most "blue" | $3.99 |
| Sauvage EDP | Rounder and sweeter, vanilla-tinged | $4.99 |
| Sauvage Parfum | Warmest and woodiest, softer projection | $3.99 |
| Sauvage Elixir | Densest — spicy, boozy, a different beast | $7.99 |
Note that the Parfum is cheaper than the EDP here, and that the Elixir is less a "stronger Sauvage" than its own fragrance. Reading the letters told you almost none of that. Wearing them tells you all of it.
How to choose yours
Don't buy a full bottle to find out which concentration you actually like. Get a decant of two or three versions, wear each for a day (our three-day method helps), and let your skin pick. A whole concentration ladder in decants costs less than one bottle — and you'll know, not guess.
Questions we get asked
Is EDP always longer-lasting than EDT?
Usually, but not always — because the concentrations are often reformulated. Some EDTs outlast their EDPs. Longevity also depends heavily on your skin.
Does higher concentration mean higher quality?
No. It means more oil and typically more weight. Whether that's "better" depends on the fragrance and the occasion — a light EDT can be the right choice.
What's the cheapest way to figure out which I like?
Sample the concentrations side by side as decants. A few dollars answers the question a bottle would cost you $80–$150 to answer.
