4. Issue: Split ends 頭發末梢分叉

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.

分叉或死亡的頭發末梢是頭發受損或風干造成的。馬諾莫尼醫生說：“頭發分叉是因為毛干的表層(或角質層)已經損壞。”但是好的一面是，你可以立即剪掉它，然后你的頭發立刻看起來更加健康。另一個竅門是妥善調理你的發梢。記住清洗和調理的功能是不同的：洗發水是針對你的頭皮，而護法素實際是針對頭發纖維。

5. Issue: Gray hair 白發

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.

你應該堅信，除了染色外，白發是遺傳的，這是不可避免的事實。大多數人的頭發周期不長(記住，一個周期是6 -8年)，此時色素細胞包圍毛囊，色素的產生處于最佳狀態。然后過程變得......疲勞。馬諾莫尼醫生不能確認老婦人講的如果你拔一根白發，五根將會長出來的傳言。然而，一旦頭發纖維變白，即使你拔掉頭發，長出來的很可能還是白頭發。

來源:可可英語 http://www.ccdyzl.cn/read/200903/65881.shtml