10 volume you can use 20 volume, but I wouldn't recommend going any higher than that.
Currently, there is no way to dye hair black without the use of dye.
You use 20 volume to cover grey hair.
1st use bleach, then the dye
no
It largely depends on the volume of the hair, but in general, about 12-15 cc hair dye per square inch of hair.
use a black with a blue base
you cant just use hair dye
Whatever color you want the hair to be after dying it.
If you have dark hair, such as brown or black, you cannot use hair dye but instead, you must bleach your hair. If you already have blonde hair, then you can use a hair dye to get to the desired shade.
dye it if you have black hair well there is almost no hope if you want it light or dark so but if you have blond hair it is very easy to do just use dye if you want non permanent use Halloween cans of hair spray you can get at the dollar store
Hair dye dah
if your hair colour is light, you can dye your hair with henna. If it's not too light like brown hair or black- it can make a slight difference.