Hair color can be beneficial if you want a shade that better suits you. In most cases, the hair will feel softer and look shinier. The hair shaft will increase, giving it more volume. The only problem is retouching the hair that grows back, or your 'roots', which will be necessary 1-3 months after you dye it, depending on how fast your hair grows. If you color your hair too often, you will get increased split ends, so it is best to trim your hair when you see this.
Whether it is 'better' or not is up to you. It can't make your hair any less 'healthy' because it is already a collection of dead cells. It is all a matter of how you take care of it.
It depends entirely on the specifics of your hair. There are certain shampoos that are better for color treated hair, oily hair, damaged hair, etc.
Tresemme has better conditioning than Herbal Essences for color treated hair and or blond hair. make sure you use the formula for color treated hair. Herbal Essences is too drying in my experience.
You can use leftover hair color to color a t-shirt, but since it isn't designed for that, it probably won't come out the way you want it to. Its a much better idea to use a specialized dye for fabric such as the Rit Dye brand.
It's best to bleach your hair first before using the hair color, but it's not required. However, bleaching will give you a much better look.
You should use sulfate-free shampoos on color treated hair.
you shoul your hair natural! dying your hair damages it, plus i think natural hair is much better then pink or blue hair ;)
Nothing.. If you use lemon juice it is horrible for your hair because it is very acidic.
it is better to perm the hair then dye because the chemicals in the relaxer will strip the hair of color. This increases the risk of your hair color being lighter than you desired.
you can use kool-aid or hair coloring
red heads have less hair so it will curl the hair better
It depends do you want a different hair color or a perm
Whatever color you want the hair to be after dying it.