South Carolina Barber Practice Exam

Which of the following is a common symptom of an allergic reaction to hair dye?

1. Immediate hair loss

2. Swelling or rash on the scalp

3. Sudden hair growth

4. Enhanced hair color

The correct answer is: Swelling or rash on the scalp

Swelling or rash on the scalp is a common symptom of an allergic reaction to hair dye. Hair dyes often contain various chemicals that can trigger immune responses in sensitive individuals. When exposed to these substances, the scalp may exhibit an inflammatory response, leading to localized swelling or the development of a rash. This reaction indicates that the body is responding to the allergen present in the dye, which is a well-documented phenomenon in dermatological studies. In contrast, immediate hair loss is not typically associated with an allergic reaction; such hair loss would more likely stem from other causes. Sudden hair growth is unrelated to allergies and may be influenced by different factors, such as hormonal changes. Enhanced hair color, while desired in the context of dyeing hair, does not represent a symptom of an allergic reaction and underscores that the dye is functioning as intended rather than indicating any adverse reaction.