What are the signs of an allergic reaction to perm products?

The signs of an allergic reaction to perm products primarily include redness, itching, or swelling on the scalp or surrounding skin. These symptoms indicate that the skin has become irritated or sensitized to the chemicals present in the perm formulation. Allergic reactions can occur when the immune system responds negatively to certain substances, leading to noticeable physical symptoms.

In contrast, signs such as dry, brittle hair, excessive oiliness, or uncontrolled frizz do not indicate an allergic reaction but rather may reflect issues related to hair health or the effects of the perm treatment itself. Dryness and brittleness often result from the chemical processing of hair, while oiliness and frizz could be attributed to factors like product buildup or insufficient moisture.