Learn how to complete a colour test with Tracey Sajno in this essential MHD testing video step-by-step. A colour test is performed during colour development to check the target colour and development time.

Testing is an essential and important part of any hairdressing business and is carried out to properly identify allergic reactions, to fulfil responsibilities relating to health & safety legislation and to maintain the professional image of the salon. Failure to perform these tests could cause damage to the client's hair and scalp and result in legal action and damage to your professional reputation.

It is important to follow the manufacturer's instructions when carrying out these tests.