Permanent or semi-permanent?
If a customer is nervous about whether a new colour will suit them, a semi-permanent hair colour might be a good option as it will only last six to eight washes.
Permanent hair colourants, on the other hand, cannot be washed out. They are easy to recognise because the pack contains at least two components that need to be mixed together before use. “They produce an effect that is resistant to washing and are chosen to provide long-term colour changes, ranging from subtle to dramatic, as well as excellent coverage of grey hair,†says Dr Meredith.