Hair color is the pigmentation of hair follicles due to two types of melanin, eumelanin and pheomelanin. Generally, if more melanin is present, the color of the hair is darker; if less melanin is present, the hair is lighter. Levels of melanin can vary over time causing a person's hair color to change, and it is possible to have hair follicles of more than one color.
If you want to try a new color look but can’t make up your mind, get one of the temporary hair colors that will wash out in six or eight shampoos. Funky, chunky highlights can be rectified nearly overnight with another color, as long as you use the wash-in-wash-out type that aren't made to last. If you're going to play with your hair color on the weekends, never use the permanent variety and then try to reverse it in less than several weeks. If you used it too frequently, the harsher chemicals in the permanent hair colors can turn your hair to straw.
If you want to try a new color look but can’t make up your mind, get one of the temporary hair colors that will wash out in six or eight shampoos. Funky, chunky highlights can be rectified nearly overnight with another color, as long as you use the wash-in-wash-out type that aren't made to last. If you're going to play with your hair color on the weekends, never use the permanent variety and then try to reverse it in less than several weeks. If you used it too frequently, the harsher chemicals in the permanent hair colors can turn your hair to straw.