Yes they are because of the chemical.
Yes, but depending on the color you choose the highlights will always be lighter than the rest.
yes you can will it kill your hair yes but you can
The highlights are permanent and change the color of the hair but the highlights will appear to darken as one's hair grows out in its natural color. The effect of blonde highlights usually lasts about 6-8 weeks before the hair needs dying again.
Yes, but believe me, it wont look too good.
There is permanent hair color and semi-permanent hair color. _____________ Demi permanent and temporary are also known as non permanent hair color.
Yes, it's fine to apply permanent color over semi permanent.
Yes.
From Juhi
Yes, you can apply permanent hair color on top of semi-permanent hair color. Make sure that you do a deep conditioning treatment or hair masque before and after you color your hair.
Of course you can. Semi permanent dye simply adds color to your hair. A permanent will actually cause your natural color to change. But remember this... color doesn't lift color. Therefore if your semi permanent hair color is darker than the permanent color you are going for---- it isn't going to work. You need to use a color remover before hand. And color removers are REALLY damaging to hair.
If the scalp is in good condition and was not irritated by the semi permanent color, it's OK to apply permanent color within 24 hours after initial color service.
If you get highlights, you should wait for a day or two. If you dye all of your hair, you should wait two to three days.