Counterfeit perfumes may be causing that itchy rash on your neck. Recent information from ABCNews.com states that counterfeit fragrance sprays may contain ingredients such as bacteria, urine and antifreeze that are absorbed in the skin. These ingredients may be added to the counterfeit perfumes for their color or pH stabilizing qualities.
Authentic perfumes may also cause contact dermatitis (irritation), but there is a much higher rate of contact dermatitis with use of counterfeit perfume sprays. When using counterfeit perfumes, one may feel stinging or notice redness soon after application. If this happens, it is best to stop using the offending perfume and follow up with your dermatologist for appropriate treatment.