What must be done before starting a chemical service on a client?

Before starting a chemical service on a client, performing a patch test is an essential step. A patch test is used primarily to check for any allergic reactions that a client might have to the chemicals used in the treatment. This process enhances the safety of the service by ensuring that the client will not experience adverse effects such as irritation, redness, or swelling on the scalp or skin. It helps identify any sensitivities the client may have to certain ingredients, thus allowing the technician to make informed decisions about the products to use and to tailor the service to the client’s needs.

While consulting with the client about their preferences is also an important part of the service, and washing the hair may be necessary depending on the specific treatment, the critical action that focuses on health and safety ahead of any chemical treatment is the patch test. Additionally, applying a deep conditioning treatment is not a prerequisite but can be part of the service afterward depending on the hair’s condition.