Hair colouring is one of the most popular and affordable ways of altering person's visual image. "Hair lightening," often referred to as "bleaching" or "decolorizing," is a chemical process involving the diffusion of the natural color pigment or artificial color from the hair. This process,
according to hair colouring tips, is central to both permanent hair color and hair lighteners. All permanent haircolor products and lighteners contain both a developer, or oxidizing agent, and an alkalizing ingredient as part of their ammonia or an ammonia substitute. Colour
choosing advices underline,
that the purpose of this is to
raise the cuticle of the hair fiber so the tint can penetrate, facilitate the formation of tints within the hair fiber, bring about the lightening action of peroxide,
and protect ends tips.
Hair colouring tips indicate,
that when the tint containing the alkalizing ingredient is combined with the developer (usually hydrogen peroxide), the peroxide becomes alkaline and diffuses, or breaks up, through the hair fiber, entering the cortex, where the melanin is located. The lightening occurs, in line with colour choosing advices, when the alkaline peroxide breaks up the melanin and replaces it with new color.
For individuals who wish to
protect ends tips, should use a subtle neutralizer for yellowing hair or to neutralize unwanted tones. The pigment molecules in temporary hair color are large and, therefore, don't penetrate the cuticle layer, allowing only a coating action that may be removed by shampooing. An example of use of temporary hair color is for Halloween costumes.
Semipermanent hair color is mostly used by women to cover up any gray hairs that may have started appearing, that
is what hair colouring tips say. In some cases, if the hair already has its own natural pigment (such as in younger people) the semipermanent hair color can act as permanent hair color, because you are applying another pigment on hair that already has pigment--graying hair lacks pigment. Generally speaking, semipermanent hair color acts like permanent hair color if using a dye a shade darker than the natural hair color. The product was made to be used by graying women or
men to be matched to their natural hair color, or to go one to two shades lighter--a temporary fix. Follow
colour choosing advices carefully and liberally.
Demipermanent hair colouring
tips are formulated to deposit color on the hair shaft without lightening it.
Permanent hair color generally contains ammonia, oxidative tints, and peroxide. The allergic reaction that comes from hair dye is generally one of sensitization to p-phenylenediamine (PPD). The reaction will most likely occur each time one dyes one's hair and will probably get worse each time. Henna is a deposit-only hair color whose active component, lawsone, binds to keratin and is therefore permanent. Henna may be removed with mineral oil; however, it is considered "permanent" because it does not wash out with shampoos or rinses. It is often mixed
in line with colour choosing
advices with other plant dyes, such as indigo, turmeric, and senna, to change the color. Allergy to henna is much rarer than allergy to permanent hair colors. It is also considered a conditioning treatment to protect ends tips.
Using a plant-based color, specifically henna, can cause problems later when trying to do a permanent wave (perm) and other permanent hair color. Discoloration can occur on hair that has been previously tinted with henna; hennaed hair typically cannot be curled. Breakage could also be an issue. Hair colour choosing advices are a must for a beginner. Hair colouring tips stress the importance of being realistic about your hair colour and what you want to have. Hair colouring tips stress the significance of understanding the basics of the hair coloring procedure and its effect. You should also remember about the protect ends tips.