Actually this product is a great invention for women who want to look their best. I never get time to go to the parlor many a times. And when there is a sudden outing like today then I feel embarrassed to go with grey hair showing non my temples. This time I used L oreal magic spray and instantly my grey got to black. It did leave a mark on my forhead but came out with wet tissue. I know it's temporary till next wash but my problem was solved and I am happy.