Why does certain perfumes/cologne give people headaches?

Experts theorize that one reason fragrance allergies appear to be increasing is that fragrances themselves have become such a prominent part of our world. According to the AAD, some 5,000 different fragrances -- and countless other fragrance combinations -- are used in products today. And they can be a powerful, toxic brew. read more

The chemicals in perfume can cause blood vessels to dilate, which causes headaches.’ Alexandra, who lives in Nottingham with her partner Mark and three-month-old daughter Phoebe, became aware of her fragrance allergy as a teenager, but its effects have grown increasingly severe. read more