How do I dye my hair? (10PTS)?

well, i started dying my hair when i was about ten, so being twelve is not too young, no. If you like the color, and think that the color will look good on you, i say go for it. I dye my hair all kinds of colors (i even dyed my hair pink before... lol), some colors are more suited for people than others. You said you want to get Cheryl Cole's shade (which i am told is Loreal Mahogany), and you arent going to find that exact same shade of dye, so as for brand continue with Loreal Mahogany. And as for how to dye your hair, since it is a dark color you will need to go to blonde first, otherwise the dye wont stick as well... all it will do is give it that color as a kind of hue (you will only even notice it in the sunlight), for bleach i will recommend going to hot topic and getting a white out kit. There is one made by Raw, and one made by Manic Panic. The one by Raw requires heat processing though, so i will recommend the one by manic panic, and if your hair is long you should get 2 of them. As for applying the dye, it is usually easiest if you have someone to help you, as seeing your hair on the back of your head can be quite difficult (its also harder to know if you got it all if your hair is really thick), otherwise you will need a hand mirror and the mirror above your sink, just check after applying some of the dye as to how much is left, try to separate the hair you have for sure gotten from the hair you need to get as well, as it makes the process a little less difficult. Also, dye will stain anything it comes into contact with, such as the sink or the shirt you are wearing so i suggest wearing one you dont care about. Oh, and as for getting out the dye that may get on the sink, use something like an SOS pad. anyways, after you dye your hair blonde, wait for 24 hours before applying the Loreal Mahogany color, otherwise it may end up blotchy. Then apply your colored dye for the recommended amount of time, then rinse out. Be sure not to use shampoo immediately after either, because a lot of the color will come right out. I am fairly certain i have covered everything, so other than that i will simply add that i hope you enjoy your color!