Coal don't contain a black dye.
The first natural dye is believed to be indigo, which produces a deep blue color and has been used for thousands of years. The first synthetic dye, known as mauveine, was created in 1856 by William Henry Perkin and is a purple color derived from coal tar.
you need to first put bleach on them to take away all color then bye your typical hair dye of whatever color you want.
A good question might be, "How long does it take a drop of food dye to color a glass of still water?"
There is no color you "should" dye your hair...it's whatever color you want to dye it!
Yes but not sure because with color dye it is going to take a few washes. See in my hair I have pink washable spray can tips on the bottom of my hair and when I was it will come out right away, but with color dye it may take a little while.
Not easily, you could take bleach to get the color to white.
It takes 24 hours to dye a carnation green.
Generally they take 24 hours for all the petals to absorb the dye in the water. Blue dye is more easily absorbed than red or green dye.
If it is temporary hair dye, the color should wash out after awhile. If it is permanent, your natural hair color will come back as the roots grow out, which could take awhile.
You can, but you shouldn't. The oil in your hair 'attracts' the chemicals in the dye, if you will, and helps your hair take the color.
You can change the color of hydrangeas by adding water-soluble dye to their water. The dye will be absorbed by the flowers, resulting in a different color.
It will aproximentlely take about 12 seconds actully it dosnt take long for the dye to spread across the water and turn it to whatever color you prefure