Lifestyle or medication, not forgetting water hardness, have made some hair harder and more impermeable and therefore more difficult to colour.
This does not apply to everyone but there are some cases emerging.
For this type of hair an alternative colour technique needs to be applied (mordant or pre-pigmented) which makes a simple colour application more laborious. With Utopik Plus Supercover tones (/00+) we eliminate these alternative processes, facilitating and optimising the work of the professional.
