What is one common sign of a chemical burn during a hair treatment?

A common sign of a chemical burn during a hair treatment is pain and redness. This symptom indicates that the skin has been damaged by the chemicals used in the treatment process. When harsh chemicals, such as those found in hair dyes or relaxers, come into contact with the scalp or skin for an extended period or if the skin is sensitive, it can lead to irritation and burns. The pain is a direct response from the body to the injury, signaling that there is tissue damage, while redness results from increased blood flow to the affected area as the body responds to the injury. Recognizing these signs is crucial for the safety of clients and helps in taking immediate action to alleviate pain and prevent further injury.