dimanche 21 juillet 2013

What To Know About Hair Coloring

By Irma Farrell


Hair coloring refers to the act of changing the color of the hair. The main purpose for doing this is cosmetic. That is, covering up locks that have gone gray, restoring original shade after bleaching or other processes have changed the color, or to stay on trend with what is most fashionable and desirable. This type of dying is an ancient art that utilizes a variety of chemical compounds.

In modern times, this practice is extremely common. This is especially true in the United States of America, where it is estimated that more than 75 percent of women dye their hair. This coloring can be done by professionals at salons and similar facilities or by individuals themselves using at-home dying kits available from most stores.

Historically, coloring was only done all over, in just one color. It is more common in modern times for multiple colors, gradations and streaks to be used on top of a natural or base color. The techniques are also known as highlighting or lowlighting. Highlighting involves the application of lighteners, while lowlighting uses dark dyes.

There are different techniques that can be used during application as well. These various methods may impact the final results. Foiling is done using foil or plastic film as a way to separate the hair that is to be colored. This is especially useful when applying more than one color. A plastic cap might also be employed. This fits comfortably around the head and strands are pulled out with a hook. Dip-dying, balayage and tipping are all processes that involve painting dye directly onto the strands without using foils. These various methods can be employed with any dye color.

There are four main classifications for coloring: temporary, semi-permanent, demi-permanent and permanent. Permanent is popular and most often done through application of oxidation dyes. Demi-permanent color is permanent coloring that includes an alkaline component other than ammonia. These cannot be used to color hair lighter than what it was previous to dying, but do not cause as much damage as permanent dyes. These are more effective than semi-permanent dyes when it comes to covering up gray but less effective than permanent products.

Semi types only penetrate the shaft partially. Because of this, the color survives repeated washes, usually between four and five shampoos or a few weeks. These contain low amounts of developer, ammonia or peroxide, or none at all. This is safer for damaged and fragile locks.

Temporary colors are available in many different forms, including sprays, rinses, gels, foams and shampoos. Typically the coloring is more bright and vibrant than other dyes. Many people use this for Halloween, costumes or other special occasions. The pigment molecules found in the dyes are too large to penetrate cuticle layers. Instead, particles of the color stay in the shaft and are removed within one or two shampoos.

Hair coloring is a popular practice, especially in the United States, done by both men and women. It involves changing the color of the hair. This may be done use dyes that are permanent, temporary, demi-permanent or semi-permanent. Hairdressers and other professionals in the cosmetology industry often do this for people or individuals can do the coloring themselves using at-home kits available at more stores.




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