What are signs of an allergic reaction during a hair color service?

During a hair color service, the signs of an allergic reaction typically include redness, swelling, and itching. These symptoms are indicative of an immune response to the hair dye, which may contain various chemical ingredients. When someone is allergic to a component in the dye, their body may react by sending inflammatory signals, leading to the mentioned symptoms in the affected areas, often around the scalp where the product is applied.

The presence of redness indicates irritation and inflammation, swelling suggests localized fluid accumulation due to the immune response, and itching is a common symptom associated with allergies caused by the release of histamines. Being aware of these signs is crucial for cosmetologists, as it allows them to respond appropriately, ensuring the safety and comfort of their clients during a hair coloring service.

Other options, such as increased hair growth, do not correlate with allergic reactions and would indicate a different issue entirely. Itching and dryness, while they may occur in other contexts, do not encapsulate the severity or specificity of an allergic response, focusing instead on minor skin conditions. Flaky scalp is more associated with skin conditions like dandruff or dermatitis rather than an acute allergic reaction, which would typically present more aggressively with swelling and redness.