What is essential to protect the client’s skin during a chemical treatment?

Applying a barrier cream is crucial for protecting the client's skin during a chemical treatment. Barrier creams create a protective layer on the skin that helps to prevent chemicals from causing irritation or burns. This is particularly important in chemical treatments, such as hair coloring or perming, where harsh substances may come into contact with the skin and lead to adverse reactions.

While moisture-rich conditioners are beneficial for hair health, they do not provide the necessary protection for the skin against chemical agents. Wearing a protective hair cover is helpful for keeping hair off the face and neck, but it doesn't safeguard the skin from chemical exposure. Rinsing with cold water can be soothing but does not offer any preventive measures before the treatment takes place. Therefore, using a barrier cream is the best practice for ensuring the client's skin remains protected during the procedure.