Chemical hair straightening
There are two ways of a hair straightening – thermal and chemical straightening. A chemical hair straightening – cardinal and not harmless change of structure of hair. The straightening chemical drugs, getting in a hair core, destroy disulfide bridges and force curls and waves to be straightened. After chemical straightening hair can be combed, washed, stacked in a hairstyle, without being afraid at the same time that they will curl again. For this procedure there is a huge number of devices and means now. In reviews of a chemical hair straightening it is said that it is impossible to subject to this procedure the hair which are previously painted by natural or chemical dyestuffs.
Means for a chemical hair straightening
For a hair straightening by a chemical method usually use chemical drug for straightening, converter, the shampoo intended especially for this procedure, protective cream and the conditioner for a hair straightening. For straightening most often use drugs on the basis of the caustic soda, a hydroxide of sodium, thioglycollate of ammonium or guanidine hydroxide.
Means for a chemical hair straightening on the basis of a hydroxide of sodium promotes opening of a cuticle of a hair. It gets into a bast layer of a hair core, softens and changes its structure. The concentration of a hydroxide of sodium in chemical means is higher, the structure of hair after straightening will be damaged stronger, and the effect of smoothing will be swept up stronger. Chemical drugs with a hydroxide of sodium are usually used for very large curls. Action of chemical means with ammonium thioglycollate much less aggressive. Drugs with this chemical compound use for straightening of not really curly hair.
Drugs for straightening on the basis of the caustic soda are considered as the strongest. Concentration of solution of soda at this procedure can be from 5 to 10%, and level рН – from 10do 14 (depending on factors and conditions of a hair straightening). In reviews of a chemical hair straightening is confirmed that the these indicators are higher, the means works quicker, but also the more there will be a harm to hair from straightening.
Means for a chemical hair straightening with guanidine hydroxide put to hair much less harm, than means with the caustic soda, however action their weaker. Drugs on the basis of guanidine hydroxide degrease head skin. Therefore when using similar drugs it is worth to remember about special head skin conditioners.
Protective creams at chemical straightening play a role of a protective barrier, protecting skin from burns. Converters stop effect of chemicals and recover normal balance рН head skin.
Process of a chemical hair straightening
The chemical hair straightening begins with combing of the head and division of hair into separate locks. Then individually chemical means is selected (depending on degree of curliness of hair). When using drug with a sodium hydroxide hair are processed previously by shampoo. If means on the basis of ammonium thioglycollate is applied, then to wash hair with shampoo there is no need.
When using strong chemical means protective cream (a hairbrush or a special brush) is applied previously on head skin and on hair surely. Then all hair are processed by chemical means, since a nape. Through time hair are carefully washed out by a large amount of water, and then become covered by special means. This means sets results of straightening and neutralizes effect of chemical drug. Then hair are carefully washed out and dried up by a heated-up towel again.
It is not recommended to straighten hair after the procedure of a chemical wave. It is better to entrust a chemical hair straightening to the professional as only the specialist will be able correctly to estimate a condition of a hair and to pick up the necessary drug for straightening, and also to determine time for effective holding this procedure.
The straightened hair will remain forever straight lines. Repeated straightening should be done only on the grown roots of hair.
Care of hair after chemical straightening
After chemical straightening hair need recovery treatment and special leaving. At first after the procedure of straightening it is impossible to pull together hair with hairpins and elastic bands. One-two times a week hair need to be fed with special masks. When washing the head after chemical straightening not the phenom, and naturally is the best of all to dry hair, not to use the curling iron.
Technology of a chemical hair straightening Goldwell
The Japanese-German concern developed permanent technology of a hair straightening. This way of straightening can be used even after a chemical wave. Hair after chemical straightening on Goldwell technology become smooth and ideally direct, their healthy natural gloss remains, they look heavier. Vitamins, silk proteins, kationovy polymers, system рН control, essential oils, a betaine are a part of drugs for a hair straightening on Goldwell technology. These means are suitable for hair of all types.
In operating time our brain spends the amount of energy equal to the 10 Watts bulb. So the image of a bulb over the head at the time of emergence of an interesting thought is not so far from the truth.
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