Which service should be performed in a well-ventilated area?

Performing chemical treatments in a well-ventilated area is essential due to the nature of the products used, which often contain strong and potentially harmful chemicals. These substances can release fumes that may irritate the respiratory system or cause other health issues if inhaled in an enclosed space. Adequate ventilation helps disperse these fumes, minimizing the risk of inhalation and ensuring a safer environment for both the barber and the client. While other services have their own considerations for safety and hygiene, the need for ventilation is particularly critical during chemical treatments due to the inherent risks associated with those chemicals.