BRASILK straightening nanotechnology with tannins provides a long-term smoothing effect on the hair fiber, enhancing its manageability and appearance without causing damage to the hair or irritation to the scalp. As nano-molecules, they penetrate through the hair cuticle and react with keratin, causing an acidic modification of the bonds that hold the polypeptide chains of keratin together. This modification results in the formation of new bonds. Due to the functional reactivity of these two components (keratin tannins’ acidity and correct straightening), new bonds are formed, leading to a smoother hair configuration.
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