What are common symptoms of an allergic reaction to a cosmetic product?

The symptoms of an allergic reaction to a cosmetic product can manifest as redness, swelling, itching, and hives. These symptoms occur as the body's immune system responds to an allergen present in the cosmetic product. Redness and swelling are indicative of inflammation, which is a common response to allergens. Itching is a direct result of histamine release in the body during an allergic reaction, leading to discomfort. The appearance of hives, or urticaria, signifies a more pronounced allergic response, characterized by raised welts on the skin that can vary in size and can be quite itchy.

The other options provided describe symptoms that are either not typical of allergic reactions or are associated with different skin conditions or responses. For instance, increased hair growth is not a symptom of an allergic reaction, while fatigue and headaches are generally not linked to cosmetic allergies. Dryness and peeling skin can indicate irritation or specific dermatological conditions rather than an allergy. Thus, the symptoms listed in the correct answer are the most consistent with an allergic reaction to cosmetic products.