SHIMMERING
How long will my colour last?
For the sake of simplifying the different types of colour we will assign them to four groups:
Temporary
Sometimes known as "Wash-in wash-out" because that is precisely how they function. They coat the surface of the hair and will last for one wash.
Semi-permanent
These colours will last between 6-8 shampoos.
Quasi or demi-permanent
Although these hair colours are not permanent they do contain low volumes of peroxide which means they deposit colour between the cuticle and cortex of the hair, resulting in them being more difficult to shampoo out. They will last between 8-12 shampoos.
Permanent
These colours cannot be shampooed out because the natural pigment of the hair goes through a chemical oxidizing process resulting in the colour being changed permanently. It will be there until the hair grows out.
However, although your hair colour has been changed permanently it will lose vibrancy over time. Excessive shampooing and exposure to the sun's UV rays will speed up this process.
However, although your hair colour has been changed permanently it will lose vibrancy over time. Excessive shampooing and exposure to the sun's UV rays will speed up this process.