What is a common allergic reaction related to hair dye?

Dermatitis is a common allergic reaction associated with hair dye, primarily due to the presence of certain chemicals, such as para-phenylenediamine (PPD). This condition manifests as redness, swelling, and irritation of the skin in response to the allergens found in the hair dye. Individuals may experience contact dermatitis, which occurs when the skin comes into direct contact with an allergen or irritant. This reaction can lead to discomfort and may require medical attention if severe.

While other conditions like hives can also result from allergic reactions, dermatitis specifically describes the skin inflammation that often results from hair dye use. Psoriasis and acne are not typical reactions linked to hair dye, as they are chronic skin conditions unrelated to allergic responses from hair coloring products.