You may have many questions when you're thinking about dyeing your hair. The most essential might relate to the type of hair dye you should use. Not all dyes are created equal, and the choice you make determines how your color looks, how your hair looks, and how long the color lasts.

Hair color is determined by two different forms of pigment: eumelanin (which is the largest influence) and phenomelanin. Eumelanin is a black pigment, and phenomelanin is a red or yellow pigment.

Wella hair color is a full line of permanent hair coloring that can be used to change your hair color or to cover up gray or white hair. You must mix the actual Wella hair color with Wella hair color developer to activate it before dying your hair.

Hair color covers up a gray mane, but salon dyes often contain chemicals that aren't friendly to your locks. If you prefer something gentler, you can darken hair naturally by making your own herbal tea dye. Dried herbs produce a tea that gives gray hair rich color and subtle highlights.

Your hair complements your skin, making it look vibrant and healthy -- if you choose the right color, that is. Choose the wrong shade and you can end up looking lifeless and washed out. The secret to achieving your ideal hue lies in your skin.

Women have been changing the color of their hair since ancient times, using plants and berries to make dye. In the 1700s, fashionable women used powder to make their hair look lighter.

If you've recently dyed your hair black and decided the color isn't for you, don't be discouraged. It is possible to dye hair back to a lighter color, whether you are dying your hair at home or enlisting the help of a professional.

Bleaching is essentially a process of lightening the color of your hair. Hydrogen peroxide is often used in combination with ammonia and a toner to both lighten and change the pigmentation or shade of your hair.

If you want to avoid an emergency buzz cut, equip yourself with the facts before bleaching your hair. Semi-permanent hair color offers natural hues that fade over time, and permanent hair dyes mix the decoloration and coloring process.

Red henna, or Lawsonia inermis, is a green powder that dyes light hair to a deep orange. Using henna to color your hair requires mixing the powder with water to a mud-like consistency and working the thick paste through your locks. It is a dye that takes a number of shampoos to fade.

Color grabbing or staining, one of the most common problems brunettes face when coloring their hair, occurs when the base tonal quality of the color is unevenly absorbed by overly porous or damaged sections of hair. If the base tone is cool or ashy, the hair turns green on the ends.

The health effects of hair coloring are, to a certain extent, unknown. And the link between hair coloring and cancer is controversial and, to date, inconclusive. But many of the chemicals contained in frequently used hair dyes have been shown to be dangerous.