Women who do buy or share fragrances with other women choose fragrances they do not like themselves - or no longer value, the findings showed.
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Many women keep their perfume preferences a secret because they consider them an integral part of their personal identity, suggests the study published in the journal Food Quality and Preference.
"Women treasure fragrances as a vital pillar of their personal identity," said study co-author Bryan Howell, industrial design professor at Brigham Young University in the US.
"They may use the same fragrance for many years, and some women keep their fragrance choice a secret so their friends won't wear it," Howell said.
The study investigated fragrance-buying intentions of 146 women from the US and the Netherlands.
When it comes to scents, women like to sabotage their best female friends, the researchers found.
"When women like a fragrance, they will purchase it for themselves or a male friend, but not for a female friend," Howell said.
"When they dislike a scent, they won't purchase it for themselves or their boyfriend, but they will buy it for a female friend," Howell said.
Further interviews with 12 women about their fragrance buying behaviour revealed why women buy fragrances for men.
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"While women hold fragrances as personally intimate and respect other women's intimate choices, they happily want to influence what fragrances men wear," Howell said.
"Assuming it is for a spouse or boyfriend, they want to pick fragrances they also like since they will be around that person often," Howell said.
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