Maine Barber Practice Exam 2026 - Free Barber Practice Questions and Study Guide

Swelling and redness are indeed common symptoms of an allergic reaction to hair dye. When an individual applies hair dye that contains allergens such as paraphenylenediamine (PPD), the immune system may react negatively. This can lead to localized swelling, which often occurs around the scalp, face, or neck where the dye has been applied. Redness indicates inflammation resulting from the body's immune response trying to combat what it perceives as a harmful substance.

While other symptoms, such as itching and dryness, may also occur, they are not as definitive or pronounced as swelling and redness in the context of an allergic reaction. Fever and chills are typically associated with systemic reactions or infections rather than localized allergic responses. Severe headaches may arise from various causes but are not a hallmark symptom of an allergic reaction to hair dye. Therefore, swelling and redness stand out as the primary indicators of such an allergic reaction, making them the correct choice.