Hi there you have placed in the notes of the color washed off after washing hair after a week .. but in other shades of the same color you uvidli of the tonormlana as shampoo and color of it just washed away as you wash your hair .. so?

- This works as a shampoo, not continuous color, so that gradually washes away, but not for single use - one color wash come down, you need to wash your head a few times ... Just like any other coloring shampoo.

how long it stays on the hair color?

- The label we "simply washable with shampoo and water." I assume you mean man washes your hair at least once a week, so as long as it lasts sure, maybe longer.