Almost everyone over-applies, and almost nobody knows they do, for the reason our guide to how smell actually works gives: you stop smelling your own fragrance within minutes while everyone else keeps smelling it for hours.
Where to spray
Chest and the base of the throat. Warm, close enough to your own nose that you get some enjoyment, and it rises toward people you face. Our default.
Behind the ears and the sides of the neck. Warmer still, which pushes projection up. Use less here than you think.
Inner elbows and wrists. Warm, and close to other people when you gesture or shake hands.
Hair and clothing. Both hold fragrance far longer than skin. Clothing especially can hold it for days, which is useful and also means it accumulates. Alcohol marks some fabrics, so test somewhere hidden before you spray silk.
Hair comes with a caveat. An eau de parfum is mostly ethanol, and ethanol dries the hair shaft, which over time shows up as split ends, breakage and frizz, and can irritate a sensitive scalp. Dedicated hair mists exist for this and are formulated without alcohol. If you are going to use your fragrance instead, spray the brush and not the head, and do it occasionally rather than daily.
Not the armpits. Fragrance is not deodorant and the combination is unpleasant.
The pulse points story is half true
You will be told to spray pulse points because blood runs close to the surface, the skin is warmer, and heat drives fragrance off you.
The warmth part is real, and our longevity, sillage and projection guide covered the mechanism. The rest is overstated. The effect is small next to how much you applied, whether your skin was moisturised, and what the fragrance is made of. Choosing between your wrist and your forearm is an adjustment, not a technique.
Our perfume myths guide handles the related myth about rubbing wrists, which is false as stated and where the advice survives for a different reason.
Spray where you want the fragrance to go, not where a diagram tells you.
What a spray actually is
Before the argument about how many, it helps to know what one is worth, because almost nobody has a number and the number changes how you think about a bottle.
Pump manufacturers build standard fragrance atomisers to deliver roughly 0.08 to 0.12 millilitres per actuation, with 0.10ml the usual design target.
A 100ml bottle holds roughly 1,000 sprays at 0.10ml, between about 830 and 1,250 depending on the pump. At three sprays a day that is a little under a year of daily wear. That is why the person who owns eleven bottles will not finish any of them, and why the 100ml is very often the wrong purchase. Our guide to building a fragrance wardrobe makes that case with money attached.
A 5ml decant is about 50 sprays, or twenty-five wears at two sprays. A 2ml is about 20 sprays, which is roughly ten proper wears: enough to find out whether you want it. That is exactly what the format is for. Those are the numbers behind our guide to testing perfume properly's advice to live with something for a week before deciding.
The figures are a design spec rather than a measurement of your bottle, and travel atomisers in particular tend to over-deliver. Treat them as the right order of magnitude, not a guarantee.
How many sprays
The number nobody wants: two to four for most fragrances, in most situations. Adjust down for:
- Heat. Warm skin projects more, so summer needs fewer.
- Enclosed spaces. Offices, cars, lifts, aeroplanes.
- Concentration. An extrait needs one or two. A cologne can take five.
- The fragrance itself, and this is the one people get wrong.
That last point deserves names. Dior Sauvage and Baccarat Rouge 540 are both built to carry, and one spray of either is a decision. Angel projects far past what its wearer perceives. Terre d'Hermès sits close by design and will take four sprays without bothering anyone. Same instruction, four different doses.
How to calibrate, since you cannot judge this yourself: apply your usual amount, then ask someone to tell you straight when they first notice it and from how far. Most people discover they should be using about half.
The rule we would give: someone should notice your fragrance when they lean in, not when they walk in.
Layering
Layering means wearing more than one scented product together. The version that reliably works is the same fragrance in different forms: unscented or matching lotion first, then the fragrance. Our longevity, sillage and projection guide explained why moisturised skin holds fragrance better. This is preparation rather than layering, and it is the one we recommend.
The version people mean is combining two different fragrances. It sometimes produces something better than either. It much more often produces mud.
There is no formula, and anyone selling you rules for layering is guessing, us included. What we can offer is that it works more often when one fragrance is simple and the other is complex rather than two complicated things fighting, and that you should apply them to different areas so you can still separate them.
Layering is now a market category rather than a hobbyist trick: body sprays and value or layering products grew 94% in 2025, per our guide to the fragrance industry right now.
Test layering on paper first, and remember our guide to testing perfume properly: you are the least reliable judge of what you are currently wearing.
Etiquette, and the part that goes beyond manners
There is real data here and it is easy to misuse, so we want to be careful.
A study by Anne Steinemann, published in Air Quality, Atmosphere & Health, surveyed adults across the United States, Australia, the United Kingdom and Sweden. 32.2% reported adverse health effects from fragranced consumer products. Reported problems included respiratory difficulties, mucosal symptoms, migraine headaches, skin rashes and asthma attacks. For 9.5% the effects were disabling, and 9% had lost work days or a job in the previous year because of fragranced product exposure at work.
It is self-reported, and it covers fragranced consumer products broadly, including air fresheners, cleaning and laundry products, not fine fragrance specifically. Those categories are a much larger part of most people's exposure than perfume is.
So it is not a claim that a third of people are made ill by your eau de parfum. It is evidence that scent sensitivity is common, real, and more prevalent than most people wearing fragrance assume.
The Canadian part, which is more formal than you may realise
This is not only manners here. It is policy, and in places it is law-adjacent.
The Canadian Human Rights Commission treats scent-free policies as an accessibility measure, comparable to ramps or automatic doors, intended to remove barriers for workers with environmental sensitivities. That framing matters: it makes fragrance an accommodation question rather than a preference question.
The Canadian Centre for Occupational Health and Safety publishes the reference guidance for employers, and its position contains a distinction most people miss. Scent-free policies are voluntary rather than legally mandated. But CCOHS states that environmental sensitivity "is recognized as a disability" and that "accommodation is required under the federal and provincial Human Rights Acts."
Nobody can fine you for wearing a loud fragrance to work. But if a colleague has a documented sensitivity, their employer has a legal obligation to accommodate it, and the cheapest way any employer meets that obligation is a policy telling everyone else to stop. That is how these rules appear: not because someone in HR dislikes perfume, but because the alternative is a human rights complaint.
The CCOHS list of covered products is also longer than people expect. Shampoo, conditioner, hairspray, deodorant, cologne, aftershave, lotions, potpourri, soaps, detergents, fabric softener, cosmetics, air fresheners, oils, candles. Someone complying with a scent-free policy is doing considerably more work than skipping their perfume.
And this is older here than most people think. The Queen Elizabeth II Health Sciences Centre in Halifax adopted a scents and air quality policy across its sites in 1996, and Dalhousie University has run a scent-free program since 1995, under the "We Share the Air" name since 2002. Canada has been doing this for thirty years. Where to wear less or nothing:
- Hospitals and medical settings. Many Canadian facilities have formal policies. Respect them without discussion.
- Aeroplanes. Recirculated air, no escape, hours.
- Restaurants. You are interfering with other people's food. One light spray or nothing, and never something heavy and sweet.
- Gyms. Heat, exertion, close quarters.
- Small offices and shared cars. If someone has mentioned headaches, they have told you something.
- Funerals and weddings. Rooms full of strangers at close quarters, some of whom will attach the day to whatever they smelled.
Where to enjoy yourself: outdoors, at home, at an evening event with space, in winter, and anywhere the alternative is not affecting a captive audience.
Taking it on a plane, in Canada
There are two different agencies with two different rules. That is why the advice you get at the airport contradicts itself. Re-checked live as of 28 August 2026, directly on CATSA's own perfume page and its liquids, gels and aerosols page: both unchanged from our original research.
Security. CATSA permits perfume in a container of 100ml or smaller in carry-on, inside the single transparent one-litre resealable bag with everything else. Perfume is permitted in checked baggage with no size limit listed on CATSA's own page. The trap is that the rule is about the container, not the contents. A 120ml bottle with 8ml left in it gets taken off you, and people lose expensive bottles to this every day.
Dangerous goods, which is a separate question CATSA's screening page does not answer directly. Perfume is a flammable liquid, and CATSA's own aerosol spray bottles and cans page states a checked-baggage limit of 500ml per container and 2 litres total per person for these products, re-confirmed live as of 28 August 2026. Nobody carries two litres of perfume. It matters if you are moving a collection.
The practical version: put the bottle in checked baggage, decant 5 or 10ml into a travel atomiser for the flight itself, and never put a full 100ml through security in a bag you might be asked to gate-check.
If someone tells you your fragrance is too much
Believe them, and thank them. They are giving you information you cannot obtain any other way, because your nose adapted to it forty minutes ago. The person who says something is doing you a favour a hundred polite people did not.
The application procedure
- Moisturise first, unscented. Biggest single improvement to how it wears.
- Two sprays to the chest, then stop and wait ten minutes before adding more. You will almost never add more.
- Adjust for the fragrance, not the occasion. One spray of something ambroxan-heavy; four of something that sits close.
- Halve it in summer, indoors, or anywhere people cannot leave.
- Ask one person, once, how far away they notice it. Then trust that number over your own nose for the rest of your life.
Part of Nose to Bottle, our complete fragrance manual. Read it in order here.