What is a fundamental principle of client safety during chemical services?

Using a barrier cream is a fundamental principle of client safety during chemical services as it protects the skin from potential irritants and chemical burns. This protective measure creates a physical barrier between the skin and the chemicals used in services such as hair coloring, perms, or chemical straightening. It significantly reduces the risk of adverse reactions, ensuring the client’s skin remains healthy and safe throughout the process.

Consultations are also vital for understanding a client’s individual needs and sensitivities, but the immediate action of applying a barrier cream is a proactive step to minimize risks during the service itself. Other approaches, like using the most expensive products, do not inherently guarantee safety and may not be relevant to the client's specific needs. Limiting treatment time is not a standard safety protocol, as the duration of a service can vary dramatically based on the specific treatment and hair type. Performing services without consultation neglects the important step of assessing potential allergies or sensitivities, which is essential for client safety.