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头发与水

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头发本身含有水分,水在决定头发的物理和化学特征中也起着非常重要的作用。头发所含水分的多少,对于头发的健康状况非常重要。  头发所含的水分随空气的湿度而变化。当空气湿润时,头发的湿度增加,静电减少;当空气干躁时,头发的湿度降低,静电增加。

  当头发潮湿时,毛皮质膨胀,毛鳞片易耸立,头发表面暂时变得粗糙。因此,梳理潮湿的头发时会遇到较大阻力,此时的毛鳞片也更容易受到伤害。水分还可以打破头发中角蛋白间的一些连接(氢键连接),从而破坏发型。因此,当空气过于潮湿时,头发很难造型;而空气过于干躁则会导致静电增加,同样很难造型。所以保持头发的水分平衡对发质的健康和发型的塑造都非常重要。
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