What are the dangers associated with inhaling powder lighteners, and how can these risks be mitigated?

Why is it important to apply colouring and lightening products in a way that minimizes the risk of spreading them to the client's skin, clothes, or surrounding area?

Identify the different types of tests (e.g., skin sensitivity test, strand test) and explain their purposes in colouring and lightening services.

What are the manufacturer’s instructions for conducting skin sensitivity tests, and what are the potential consequences of failing to perform these tests?

What courses of action should you take in the event of adverse reactions to colouring or lightening tests?

How does the natural pigment within hair affect the choice of colour and colouring products? Why might pre-lightening be necessary?

Explain the effect of lightening products on the structure of hair.

When and why should different types of toners be used?

What factors could impact the success of colouring and lightening services, and how can these be managed?

How do you determine the quantity of hair to weave to achieve a balanced look during highlighting?

When and why should you carry out colour refreshing techniques on the mid-lengths and ends?

Why is it important to emulsify colour before removing it from the hair?

What are the types and causes of problems that may occur during colouring and lightening, and how can these be resolved?

What are the reasons for pre-softening and pre-pigmenting hair? Describe the methods used for both processes.