Hair coloring is both the science and art of changing the color of hair. Hair coloring includes the processes of adding artificial pigment to the natural hair color, adding artificial pigment to previously colored hair, adding artificial pigment to prelightened hair, and diffusing natural pigment and adding artifical pigment in one step.
There are many varities of hair coloring and even more of a variety in the ways to instill the pigments.
Hair lightening involves the diffusing of the natural pigment or artificial color of the hair. Attained skill in hair coloring is accomplished through continouos practice and study, just like in any other skillful practice. The princible reasons for the coloring or lightening of hair are to restore gray hair to its original color, to change the natural color
of hair to a more attractive shade, to restore hair to its natural color, to create decrative effects, and to enhance or create highlights.
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