For most people in the world, dabbing on a spot of perfume or cologne in the mornings is a part their morning routine. Many of us have heard that maxim made famous by style icon Coco Chanel: “A woman should wear perfume wherever she wants to be kissed.”

Romanticism aside, the general consensus on this has been that perfume should be worn on the pulse points in order to lengthen the life of the perfume. However, Elizabeth Barrial, a perfumer at Black Phoenix Alchemy Lab in North Hollywood, California says:

The body heat generated by pulse points helps intensify fragrance, and can often diffuse, magnify and amplify a scent, but it won’t affect the longevity. Perfumes will generally be stronger on someone with oily skin and good circulation whose body runs a little hotter.”

For longevity, she suggests spritzing it in your hair.

Hair is great at retaining scents (both good and bad). Dr. Michael Roizen answers a question on the smell of smoke lingering in hair over at sharecare.com:

…your hair acts like a paper towel—it’s absorbent. And hair also often has a mild electric charge, particularly in very low humidity, and this can attract charged pollutant particles. So in a nutshell, your hair takes the stink from the air, and brings it home with you.

If you opt to go the hair route, make sure you only do this with clean hair, as About.com’s Catherine Helbig warns that “natural oils (and any lingering hair products) will affect the odor.”

Also, not all scents work for everyone. TLC Style’s Alia Hoyt advises to

carefully test each scent before making a public debut. Many physical factors, like body chemistry and skin type, can alter the impression of any fragrance, rapidly changing a soft, sweet scent into a sour or overpowering one.

And for those of you out there who like to spray scent onto your wrists and rub them together—don’t. From eHow Style:

Do not rub perfume into skin. Doing so will break down some of the molecular composition (or “bruise”) the perfume.

On a similar note, some perfumes can stain clothing, it is recommended that you apply fragrances before dressing.

Go forth and eliminate B.O!

References
Is there a benefit to applying fragrance to pulse points?
Why does my hair smell like smoke after being around smokers?
How and Where to Apply Perfume to Make It Last Longer
Why Do You Put Fragrances on Your Pulse Points