Japanese straightening: for whom?
Japanese straightening is suitable for women who have curly or frizzy hair, and no longer want to go through the brushing box every morning.
The technique is also suitable for frizzy hair (if they have not been straightened with soda before). For colored hair, smoothing is possible, provided that they are repaired beforehand (nourishing and moisturizing care). But if they are very discolored, they are too fragile: smoothing is not recommended.
>> Discover our special advice for dry hair in our article: “SOS hair: it looks like straw”
Japanese smoothing: the technique
It acts on the structure of the hair by modifying its shape using ammonium thioglycolate (dilute ammonium salts recognized for their tolerance). Non-corrosive, this product softens it, then ceramic plates will give it a new smooth shape for a long time. Its interest, compared to a classic straightening (well known for frizzy and too aggressive hair)? It is the contribution of care active ingredients (collagen, proteins, amino acids) which penetrate to the heart of the fiber at the same time as the smoothing formula.
In practice
The hairdresser must work meticulously to properly position each strand in the direction of growth and thus avoid creases. A delicate operation that lasts between 3 and 6 hours depending on the length and hair mass of the candidate.
The result
The technique smoothes perfectly without damaging. Not only the hair is straight but in addition, it is beautiful and shiny.
>> All the secrets for beautiful hair in our file.
Japanese smoothing: maintenance
Prohibition to wash your hair for the next three days, so that the smooth shape is imprinted permanently. We do not tie them and we do not put them behind the ears for a week. You also have to wait a month to do your color or highlights. When you follow these recommendations, the baguette effect lasts indefinitely on the lengths. As the hair grows back (and the curls with it), the roots are “touched up” after six to eight months to maintain perfect smoothness.
How much does it cost ?
From €350 on lengths of 7 cm to €800 for hair that reaches the lower back.
Where ?
For the authentic Japanese smoothing LissFactor, we find the list of addresses throughout France on the site www.lissfactor.com
>> Read also: “Coloring, what is the best technique for you?”
Japanese smoothing: products under close surveillance
Behind the proposals of certain websites and specialized brands often hide smoothing products imported from Brazil and the United States, pinned by the Afssaps (French Agency for the Safety of Health Products) and banned in France.
They contain formaldehyde, which damages the hair: It is a formalin derivative added to traditional keratin to fix the smoothing longer. Problem: this substance transforms the hair into a material as fragile as crystal, quick to break.
They cause allergic reactions: Formaldehyde causes eye, respiratory or skin irritation, and even burns to the hair and scalp.
They are also toxic for the hairdresser : This molecule presents a real danger for the professionals who use it. It can lead to asthma attacks and a long-term risk of cancer.
