Just like the old saying "no two fingers prints are the same", the rules follows suite with the natural pigments of the hair. Color hair is not as simple as television makes it seem to be. In fact coloring hair requires a basic understanding of simple chemistry, and what happens to the hair once the chemicals are applied to it. Ammonia is the main component found in color, and when mixed with the developer, or the Peroxide create different sized molecules that penetrate the hair shaft. Creating a new very specific hair color for each individual.
             Along with other elements, coloring hair is a bit of a chemistry balancing act. First let me explain a little bit about the hair make up. A single strand of hair has at the least two levels and some have three. The two that are always prominent in each hair strand are: first the outer layer the cuticle. The cuticle is make up of keratin and has scales all over it similar to a fish's sales but extremely tiny. The scales on the cuticle are completely transparent but when the hair is at its healthiest the cuticle lays flat and reflects the color and creates maximum shine. When coloring the hair the reaction the Color (ammonia) and the Developer (peroxide) have is a warming effect which allow the cuticle to open and the color molecules to penetrate into the cortex. The second layer to the hair is the Cortex. This is where the pigment of the hair is located. In some cases and only these does the hair have a third layer called the medulla. The medulla is only found in thick hair and even though it doesn't exist in all hair types, but when present it is an important factor in changing the color make up of the hair.
             There are several different types of colors which can give a temporary to permanent effect. The first one and the least abrasive to the hair is the demi-permanent color. Demi-permanent color doesn't have ammonia in the color its self, but is still mixed wit...