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4. Issue: Split ends 头发末梢分叉
Split, or "dead" ends are the result of damaged or weathered hair. "The hair splays apart because the outer layer (or cuticle) of the hair shaft has worn away," Dr. Mirmirani says. But the good news is, you can snip them right off, and immediately your hair will look healthier. Another trick is to keep your ends well-conditioned. Remember there is a difference between the function of cleansing and conditioning: Shampoo is for your scalp, and conditioner is for the actual hair fibers.
分叉或死亡的头发末梢是头发受损或风干造成的。马诺莫尼医生说：“头发分叉是因为毛干的表层(或角质层)已经损坏。”但是好的一面是，你可以立即剪掉它，然后你的头发立刻看起来更加健康。另一个窍门是妥善调理你的发梢。记住清洗和调理的功能是不同的：洗发水是针对你的头皮，而护法素实际是针对头发纤维。
5. Issue: Gray hair 白发
The unavoidable truth is that gray hair is genetic, and aside from coloring, you're stuck with it. Most people only have a handful of hair cycles (remember, a cycle is 6 - 8 years) where the pigment-producing cells that surround the follicle and transfer pigment are working at their best. The process just gets . . . tired. Dr. Mirmirani can't confirm the old wives' tales that tell you if you yank one gray hair, five more will sprout up. However, once a fiber is gray--even if you pluck it--it will more than likely grow back in gray again.
你应该坚信，除了染色外，白发是遗传的，这是不可避免的事实。大多数人的头发周期不长(记住，一个周期是6 -8年)，此时色素细胞包围毛囊，色素的产生处于最佳状态。然后过程变得......疲劳。马诺莫尼医生不能确认老妇人讲的如果你拔一根白发，五根将会长出来的传言。然而，一旦头发纤维变白，即使你拔掉头发，长出来的很可能还是白头发。
