The opening is orange peel over a dry, almost dusty grapefruit. It does not smell sweet. If you like juice-stand citrus, this will feel stern. Give it ten minutes. The flint accord — that gunpowder / hot sidewalk note Jean-Claude Ellena built the thing around — is the point. Pepper and a little geranium keep it from turning into a construction site.

On skin it sits close. This is not a club scent. It is an outdoor shirt, a car with the windows cracked, a lunch that runs long. In heat it gets louder; in a meeting room it stays polite.

Skip it if you want vanilla, if you want a fresh-laundry blast, or if you already own three citrus-woods and cannot tell them apart. Keep it if you want a cologne that still smells like a material — orange oil, vetiver, something you could almost pick up — instead of a mood board.

Spray the same juice on the inside of your wrist or the side of your neck. One spray. Then leave the store. Citrus and aldehydes are loud for ten minutes and then they leave. What you are choosing is whatever is still there when you get to the car, and again after dinner.

A few rules that save money:

• Do not test four colas on the same arm. You will smell soup.
• Coffee beans at the counter do not reset your nose. Fresh air does.
• “Lasts all day” on a box usually means the base is loud, not that the pretty opening stuck around.
• If you only like it on paper, you like the top. Wait.

Decants exist so you can wear something three times before you own 100ml of a mistake. Use them.

Sometimes it is citrus: bergamot, lemon, grapefruit. Those notes are volatile. They are gone while you are still putting your shirt on. What remains is whatever wood, musk, or ambroxan was sitting underneath. If you wanted a lemon, you now own a musk.

Sometimes it is laundry: clean musks, a little floral, the “just showered” accord that reads as soap from a foot away. That can be a good office smell. It is also how a dozen bottles end up interchangeable.

Sometimes it is mint, marine, or a metallic “air” note. Those can be sharp and interesting. They can also smell like a dishwasher tab if the formula is cheap.

The useful move is to ignore the word and name the materials. If the top is grapefruit and the base is vetiver, say that. If the heart is ambroxan, say that. Notes is the map. The adjective on the box is the ad.