Weíve discussed haircolor tips for different hair textures and wave patterns, and dealt with the needs of various hair density levels when trying to color the hair, but these arenít the only factors that govern what type
of haircoloring will look best or how the haircolor processing will work. Hair length can be a major player in any haircolor process Ė for a number of reasons. But for simplicityís sake, letís look at all-over color
and special-effects coloring separately.
First, the length of the hair can affect the processing time of all-over haircolor for very practical reasons. Long hair can present a challenge to get even color processing since the ends of the hair can be more porous than the portions of the hair nearer to the scalp and absorb the color more quickly allowing for faster development of the color. On the other hand, the portions at the scalp can process more rapidly as well
because of the warmth of the scalp. This leaves the middle lengths as the portion of the hair that takes longest to process. If not compensated for, the results can be haircolor that is darker
(or brighter) at the scalp and ends and less-so in the middle giving an uneven result.
To compensate for this, when coloring long hair, you should apply the haircolor to the hair starting about 2 inches from the scalp, and stopping about a third of the way from the end. Once the middle lengths are
covered, go back over the head and apply the color to the scalp (giving the mid-sections about 10 minutes head start to process) and to the ends. This should help to ensure an even color result.
As mentioned in the above paragraphs, short hair presents an issue in haircolor processing because very short lengths mean the hair is going to rest against the scalp, which can dramatically speed processing times,
which is significant when using high-lift color or a bleaching process. You want to make certain that all the hair lays flat against the scalp, when the color mix is applied, so that the temperature remains
consistent. You generally want to wrap the hair in plastic or use a cap.
Otherwise, if the hair is plied with color mix, and is standing away from the scalp as it processes, the ends of the hair will be cooler than the portions at the scalp, and will process more slowly. This means the
end result could be hair that is brighter (or darker) at the scalp than at the ends. It also means that in a lightening process, by the time the ends of the hair are properly lightened, the hair at the scalp could
be over-processed and damaged.
Special Effects Color Techniques
When doing special effects coloring, such as highlighting and low-lighting, the length of the hair is once again an important consideration. There are specific techniques that are best suited to certain lengths of
the hair, or layered versus blunt styles. The variations on these techniques are too numerous to make a comprehensive listing here, but there are some basics that can be adapted and should be mentioned.
Burnishing the Hair
When you want to add a hint of color to really short hair styles, most of the traditional effects techniques are unsuitable. When the hair drops below a certain length, the use of foils, or highlighting caps is
impractical, and yet, even those who prefer shorter hair would be served well by the application of color in some measure. Thatís were a technique called burnishing comes in handy.