時(shí)差N小時(shí):怎樣把胡子刮干凈

In theory, shaving ought to be simple: the razorcuts the hair.

理論上說(shuō)，刮胡子應(yīng)該很簡(jiǎn)單：剃須刀切斷胡須。

In practice, it's not just a matter of razors and hair,there's also shaving cream to consider—foamy stuffthat you smear around your hairs before shaving.

實(shí)際上，這并不只關(guān)系到剃刀和胡須，也要考慮能產(chǎn)生泡沫的剃須膏，在刮胡子之前把它涂抹在胡須周?chē)?/p>

How come? Is shaving cream really necessary and, ifso, how does it work?

為甚么?剃須膏真的有必要嗎?如果有，它是如何作用的?

While there's a wide variety of shaving foams available, some with perfumes or otherchemicals for your skin,

盡管市面上有琳瑯滿目的剃須膏可供選擇，一些帶有香水，一些帶有護(hù)理肌膚的其它化學(xué)成分，

there's one thing that they all have in common: They're all wet, and this wetness is the key totheir function.

但是這些剃須膏有一個(gè)相同點(diǎn)——濕潤(rùn)，這正是它們發(fā)揮功效的關(guān)鍵。

Wet hair is much easier for a razor to cut than dry hair is, because water makes the proteins inyour hair soften and expand.

刮濕潤(rùn)的胡須通常要比刮干燥的胡須容易，因?yàn)闈穸仁购殐?nèi)的蛋白質(zhì)軟化擴(kuò)張。

While it's possible to shave with a completely dry razor, you probably don't want to try it--it'sboth painful and inefficient.

雖然也可以用干燥的剃須刀刮胡子，但你可能不會(huì)去試，因?yàn)檫@樣既疼痛又效率不高。

The best way to use shaving cream is to apply it, then wait a couple minutes before shaving.

使用剃須膏最好的方式就是將其敷在胡須上，等兩分鐘再刮。

This is because, while wet hair is good for shaving, completely saturated hair is even better.

這是因?yàn)槌魸駶?rùn)的胡須很容易，那么除掉濕透的胡須則更容易了。

It takes about two minutes for the hairs to soak all the way through.

只需兩分鐘，水分就可以完全浸透胡須。

This is a good reason to use shaving cream, instead of just wetting your face with water. Thefoaminess of the cream helps hold the water in place long enough to soak in.

剃須膏產(chǎn)生的泡沫會(huì)長(zhǎng)時(shí)鎖住水分，使其浸透胡須。這就是為甚么要用剃須膏，而不是直接用水打濕胡須的原因。

For an electric razor, of course, you shouldn't use shaving cream. Electric razors shear yourhairs off, snipping them like tiny scissors.

當(dāng)然用電動(dòng)剃須刀剃須的話，就不應(yīng)該再用剃須膏了。電動(dòng)剃須刀像小剪刀似的將胡須剪掉切碎。

This works best on brittle hair that's pointing straight out, which is why electric shavinglotions contain alcohol to dry the hairs and make them stand straight.

它適用于脆性易斷，直立向外生長(zhǎng)的胡須，這就是為什么電動(dòng)剃須香液里含有酒精——酒精使胡須干燥，并直立起來(lái)。