There are two ways to straighten hair - thermal and chemical straightening. Chemical hair straightening - a cardinal and not harmless change in the structure of hair. Straightening chemicals, penetrating the hair shaft, destroy disulfide bonds and cause curls and waves to straighten. After chemical straightening, hair can be combed, washed, styled, without being afraid that it will curl again. For this procedure, there is now a huge amount of devices and tools. Reviews on chemical hair straightening say that you must not expose to this procedure pre-dyed natural or chemical dyes..

Chemical hair straighteners: Chemical straighteners usually use a chemical straightener, a neutralizer, shampoo specifically designed for this procedure, a protective cream and conditioner for hair straightening.. For rectification, preparations based on caustic soda, sodium hydroxide, ammonium thioglycolate or guanidine hydroxide are most often used..

Sodium hydroxide-based chemical hair straightener helps open hair cuticles. It penetrates the cortex of the hair shaft, softens and changes its structure.. The higher the concentration of sodium hydroxide in the chemical, the more the hair structure will be damaged after straightening, and the more noticeable is the smoothing effect. Sodium hydroxide chemicals are usually used for very large curls.. The action of chemicals with ammonium thioglycolate is much less aggressive. Preparations with this chemical compound are used to straighten not very curly hair..

Caustic soda-based straightening preparations are considered the strongest.. The concentration of soda solution in this procedure can be from 5 to 10%, and the pH level can be from 10 to 14 (depending on factors and conditions of hair straightening). In the reviews of chemical hair straightening, it is confirmed that the higher these indicators, the faster the product acts, but the more damage to the hair will be from straightening.

Means for chemical hair straightening with guanidine hydroxide do much less harm to hair than means with caustic soda, but their effect is weaker. Guanidine hydroxide-based preparations degrease the scalp. Therefore, when using such drugs, one should not forget about special conditioners for the scalp.

Protective creams during chemical straightening play the role of a protective barrier, protecting the skin from burns. Neutralizers stop the action of chemicals and restore the normal pH balance of the scalp.

The process of chemical hair straightening Chemical hair straightening begins with combing the head and dividing the hair into separate strands. Then a chemical agent is individually selected (depending on the degree of curly hair). When using a drug with sodium hydroxide, hair is pre-treated with shampoo. If an agent based on ammonium thioglycolate is used, then there is no need to wash hair with shampoo.

When using a strong chemical agent, a protective cream (with a comb or special brush) must be applied to the scalp and hair beforehand. Then all hair is treated with a chemical agent, starting from the back of the head.. After a while, the hair is thoroughly washed with plenty of water, and then covered with a special tool. This tool fixes the results of straightening and neutralizes the effect of a chemical preparation. Then the hair is thoroughly washed again and dried with a heated towel.

It is not recommended to straighten hair after a perm. Chemical hair straightening is best entrusted to a professional, since only a specialist can correctly assess the condition of the hair and choose the right drug for straightening, as well as set the time for the effective implementation of this procedure.

Straightened hair will remain straight forever. Repeated straightening should be done only on regrown hair roots.

Hair care after chemical straightening After chemical straightening, hair needs rehabilitation treatment and special care. For the first time after the straightening procedure, you can not pull hair with hairpins and elastic bands. Once or twice a week, hair should be nourished with special masks. When washing your hair after chemical straightening, it is best to dry your hair not with a hairdryer, but naturally, do not use a curling iron.

Goldwell chemical hair straightening technologyJapanese-German concern has developed a permanent hair straightening technology. This straightening method can be used even after perming. Hair after chemical straightening using Goldwell technology becomes smooth and perfectly straight, their healthy natural shine is preserved, they look heavier. Goldwell hair straightening products include vitamins, silk proteins, cationic polymers, pH control, essential oils, betaine. These products are suitable for all hair types..

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