Hey everyone! Lissette here for DNews. Chapped lips are terrible. It’s that uncomfortable

嗨 大家！我是DNews的Lissette，嘴巴乾裂是一件很糟的事，感覺很不舒服

dry sensation on your lips, flaky or cracking skin, and in some of the worst cases, bleeding.

嘴唇感到乾燥，嘴皮會脫落和破裂，更嚴重的話還會導致流血

They're more common in certain seasons or climates.

這種現象在特定的季節和氣候是很正常的

But what causes your lips to chap in the first place?

但嘴唇乾裂是怎麼發生的?

To start, the skin on your lips is much more sensitive than the rest of the skin on your body.

因為嘴唇是全身上下皮膚最敏感的部位。

Your lip structure is just different. While it is made up of the epidermis and dermis

嘴唇的結構跟其他肌膚不一樣，是由表皮層和下皮層組成

like the rest of your skin, the outermost layer of the epidermis - the stratum corneum

不過在嘴唇表皮最外面那一層角質層

is much thinner on our lips. So thin, that it allows more visibility into our blood vessels

非常的薄 所以我們能透過表皮看到血管

giving our lips that reddish color. What’s more, lips don't have sweat glands to provide

這也是我們唇色呈現紅色的原因，而且，嘴唇因為沒有汗腺

moisture or hair to provide protection from the sun.

所以無法提供水分，嘴唇上也沒有毛髮能夠隔離陽光

This helps explain why lips get more chapped in the cold winter months or after catching

這就是為什麼嘴唇容易在天冷時，或天熱去完沙灘接收陽光輻射後

some rays on a hot sandy beach. The excess wind, lack of moisture in the air, and UV rays

更乾裂的原因。過度的風吹，空氣乾燥和紫外線

can cause your lips to lose moisture, burn, and they end up being chapped.

會使你的嘴唇失去水分，最後導致乾裂

Yeah, chapped lips can just be a sunburn...on your lips. But it isn’t always the weather’s fault.

雖然嘴唇乾燥可以說是曬傷，但是不一定都是天氣的緣故。

Sometimes you end up doing it to yourself.

有時候是你自己造成的

Sorry. Have you ever woken up with super dry lips, especially when you’re congested?

你是否曾經醒來的時候覺得嘴巴特別乾？尤其當你鼻塞的時候

Well, this could be because you were breathing through your mouth,

這是因為當你用嘴巴呼吸的時候

removing the moisture from your lips!

水分就從你的嘴巴流失

And perhaps even worse, is the act of licking your lips excessively.

甚至填嘴唇會讓情況更嚴重

It may sound counter-intuitive, but as the saliva evaporates from your lips,

這聽起來也許很不合理 不過當唾液從嘴上蒸發時

it sucks away heat and moisture,leaving your lips potentially drier than before you licked them.

會散發熱量及水分，所以舔嘴唇之後反而更乾

Many products we use and foods we eat can also be the culprits. These range from irritating cosmetics,

許多我們使用的產品以及食用的食物也會是元兇 例如刺激性化妝品

toothpastes, medications, figs, food colorings, and, wait for it… even lip balm.

牙膏, 藥物, 無花果, 食用色素, 甚至護唇膏

While some lip balms may be helpful, others can make chapped lips worse. I know,

有些護唇膏有效，但有些會讓嘴唇更乾

this one really got me too. But, the problem is ingredients in some lip balms…

我也有這困擾，這是護唇膏成分的問題，

Like propyl gallate, or phenyl salicylate, can be skin irritants,

像是沒食子酸丙酯或薩羅(水楊酸苯酯)會刺激皮膚

and another, salicylic acid, can cause skin slough off more easily!

另外像是柳酸(水楊酸)會使皮膚容易脫落

One super common lip balm ingredient that you may love is Menthol

另外你可能很愛的護唇膏成分是薄荷醇

it tastes and smells delicious but it's also an alcohol and can dry out your lips.

它聞起來和嘗起來都很香 但是它乙醇的成分會讓你嘴唇更乾

So what can you do restore moisture to your dry, chapped lips?

要怎麼樣才能讓你乾裂的嘴唇保持濕潤？

Staying hydrated, breathing through your nose, and using a humidifier during dry months,

要多喝水、用鼻子呼吸、乾燥的季節裡用增濕器

definitely helps, not to mention avoiding licking your lips,

這樣絕對有效，更不用說要避免舔嘴唇，

staying away from harmful products, and reducing sun and wind exposure.

避免有害產品及減少日曬與風吹

But if you've just gotta get your lip balm fix, the Mayo Clinic says to try some good oil petroleum jelly.

但如果你想要換護唇膏的話，梅奧醫院(世界著名醫療機構)提議多嘗試較油的（例如凡士林）

But, the trick here, and with anything you use for your chapped lips,

但是要注意，不論你使用什麼護唇膏

is to make sure that it works for you. We all have different allergies, sensitivities, and reactions

要確定適不適合你，因為每個人體質不一樣，會因為不同產品

to different products. So, what may work for your pout, may not work for someone else’s.

產生過敏反應等等，所以適合你的不一定適合別人

This is a pretty common problem for people in the winter, but different seasons will

嘴唇乾裂在冬天裡是很常見的，但是不同季節可以

affect our bodies in surprising ways! For example, did you know winter can alter your genetics?

很奇妙的影響我們身體，例如，你知道冬天可以改變基因嗎？

Julia has the scoop in this video.

Julia有相關的影片

(Julia影片宣傳)

Guys, do you have any science questions? What should we look into next?

大家有甚麼科學相關的問題嗎？下一個要討論什麼呢？

Tell us in the comments, subscribe for more DNews and thanks for watching!

在DNews 下面留言告訴我們吧，感謝你的收看！