The simplest way to try out that new look you have been thinking
about can be done using temporary hair color. This type of hair
color is also great for quick touch ups or to eliminate yellow tones
from gray hair. the dyes used to coat the surface of the hair have
a low affinity to it, making it easily removable by shampooing.
In addition the pigment molecules in temporary hair colors are large;
therefore, the chemicals do not penetrate the cuticle layer, only
allowing a coating action.
You may want to color your hair for some occasions, say for example, for a party. You might as well opt for temporary hair color. Otherwise, you can also use semi-permanent hair color. Often temporary hair color is used to enjoy a new look over a limited span of time. However, opt for permanent hair color only when you are confident of keeping that color for long.
Temporary hair color is available in various product forms. These include rinses, shampoos, gels, sprays, and others. This type of hair color is typically used to give brighter, more vibrant shades or colors such as orange or red since these may be difficult to achieve with semi-permanent and permanent hair color. Again, such phenomenon is due to the fact that temporary hair colorants do not penetrate the hair shaft itself. Instead, these dyes remain adsorbed, closely adherent to the follicle. Few times of shampooing can easily remove the color. On the other hand, temporary hair coloring agents can persist if the user's hair is overly dry, dull or damaged. These conditions allow the migration of the dye from the exterior to the interior of the follicle.
While temporary hair color products hold a lesser market than semi-permanent and permanent agents, they have value as they can be easily and quickly removed without bleaching or application of a different dye.