You apply the chalk directly to the strand. Take a thin section of hair and color with either the end or the side of the chalk, using downward strokes.
First off, you may be misunderstanding the word 'ignorant'. An ignorant person is not someone who ignores you. It can refer to someone who refuses to acknowledge facts or inform...
As long as your hair is healthy, the chalk should shampoo out easily. Very damaged or bleached hair may stain and require a few shampoos for complete removal.
If your hair is severely damaged, it will not be possible to get a color that requires pre-lightening, such as pink, without risking severe damage and breakage.
Any chalk will dry out hair by absorbing oils and other moisture from it, but as long as you care for your hair properly afterwards, there should be no permanent...