| A | B |
|---|
| Lighten | Partially remove color. |
| White | Maximum bleaching of the hair. |
| Warm | Containing red or gold tones. |
| Shade | A change in color value by adding black. |
| Porosity | The ability of the hair to absorb moisture. |
| Primary colors | Red, Yellow, Blue. |
| Single application tint | A process that lightens and adds color in the same step. |
| Color Value | The degree of lightness or darkness of a color. |
| Cortex | The layer of the hair containing the melanin. |
| Cuticle | The outer layer of the hair. |
| Developer | Hydrogen peroxide, usually 20 volume. |
| Line of demarcation | A streak caused by overlapping on previously tinted hair. |
| 1-20 test | Test for metallic salts. |
| Skin test | Predisposition test. |
| Para-phenylene-diamine | Main ingredient in an analine derivative tint. |
| Dye solvent | Used to remove artificial color from the hair. |
| Oxygen gas | Released when the developer is mixed with the color or lightener. |
| Hygroscopic | Porosity |
| Peroxometer | Hydrometer |
| Silver nitrate | Metallic dye |
