New Jersey Barber and Hairstyling Practice Exam

What is a common symptom of an allergic reaction to hair dye?

1. Dryness and brittleness

2. Itching, redness, or swelling

3. Loss of hair volume

4. Oily scalp

The correct answer is: Itching, redness, or swelling

Itching, redness, or swelling are hallmark symptoms of an allergic reaction to hair dye. These symptoms occur because the body's immune system responds to specific chemicals found in the dye, which may be perceived as harmful. This reaction can lead to localized inflammation in the scalp and surrounding areas where the dye was applied. The redness indicates increased blood flow to the area as part of the immune response, while itching is often a result of the release of histamines, which can also lead to swelling. These reactions typically manifest shortly after application and can vary in severity depending on the individual's sensitivity to the substances present in the hair dye. Other options like dryness and brittleness or oily scalp do not directly indicate an allergic reaction, as they are more common signs of hair or scalp condition rather than an immune response. Loss of hair volume can occur for various reasons, such as damage to the hair follicles or styling practices, rather than directly reflecting an allergic reaction to a hair product. Thus, recognizing itching, redness, and swelling as symptoms specific to an allergic response is crucial for those working in barbering and hairstyling, enabling them to ensure client safety and address any adverse reactions appropriately.