Texas Cosmetology License Practice Exam 2026 – The All-in-One Guide to Master Your License!

The signs of a possible allergic reaction to hair dye primarily include redness, swelling, itching, or rash. When an individual experiences an allergic reaction, the skin's immune response is activated, leading to inflammation and irritation. These symptoms occur due to the body's reaction to specific chemicals found in hair dyes, particularly those containing paraphenylenediamine (PPD) and other allergens. Recognizing these signs is crucial for safety; if someone experiences these symptoms after applying hair dye, it indicates that they may be allergic and should seek medical advice and avoid further use of the product.

The other options generally relate to issues that might occur with hair health or scalp condition but do not indicate an allergic reaction. Dryness and frizziness are often the result of damage from heat styling or chemical processes, while hair breakage can be attributed to excessive processing and lack of moisture. A greasy scalp is usually a sign of oil buildup and is not associated with allergic reactions. Understanding the distinction between allergic reactions and other hair or scalp issues helps professionals provide better care and advice to clients.