semi permenant colours will only eneter the cuticle layer, they are not mixed with any form of peroxide there for can not oxidise and enter the cortex. They are a conditioner based colour, improve the condition of the hair and are easily washed out within 6-8 washes. These are great for ading tone and depth to the hair but will not lighten or change the base colour.
its a
Quasi permanent hair color is gentle on the hair structure, but gets lighter with each hair wash. This type of color keeps the hair structure soft.
Tempoary colours do not affect the hair structure. They lie on the hair cuticle and are washed off straight away when you shampoo your hair.
It might make your hair dry and will cause split ends
black
Describe the physical effects of styling techniques on the hair structure?
in the cortex
Semi permanent colours wash out after 6-8 washes so just give it an extra shampoo everytime you wash it.
Information regarding permanent hair removal procedures can be found online. The website MedicineNet has an article about laser hair removal and it shows all the side effects of the treatment.
A semi permanent colour is a colour that lasts 6-8 weeks. It lies just under the cuticle of the hair and this is why it washes out. (It doesn't enter into the hair or affect the internal structure of the hair).
you can get some really amazing colours from superdrug :D does that answer it ?
Hair dying is never permanent. Depending on the method of dying used and how well it is done, the effects might last anywhere from days to months.