All hair is made of the protein keratin.

所有毛发都由角蛋白。

Keratin is a protein produced by your hair follicles.

角蛋白毛囊分泌的一种蛋白质。

Increased keratin production is another one.

另一个角蛋白增多。

Poor sleep can lower your body's ability to produce keratin, which is essential for healthy hair.

睡眠不足会降低你的身体产生角蛋白的能力，而角蛋白对头发健康至关重要。

Many beauty products include honey, beeswax and keratin which is the protein found in animal cells.

许多美容产品包括蜂蜜，蜂蜡和角蛋白都如此，角蛋白在动物细胞中发现的蛋白质。

Hair is made of keratin, the same protein that forms your fingernails… with a few extra ingredients.

头发由角蛋白的，角蛋白也指甲的蛋白质… 再含有一些额外的分。

Some whales build up waxes, along with lipids and keratin protein into what's called earplugs.

有的鲸会产生鲸蜡、油脂和角蛋白，称为“耳塞”的东西。

The scales are made of keratin, which is the same ingredient that's in our nails.

这种鳞片由角蛋白, 和我们的指甲相同的分。

The scales are made of keratin, the same stuff as human hair and fingernails.

鳞片由角蛋白的，和人类的头发和指甲一样的东西。

But us humans only have a very thin layer of keratin on our fingers and toes.

但我们人类的手指和脚趾上只有很薄的一层角蛋白。

It can also break down skin cells and keratin to help unclog the pores.

它还可以分解皮肤细胞和角蛋白以保证毛孔畅通。

When these cells move upwards, they're filled with a hardened protein called keratin.

细胞在向上移动过程中，会填充一种硬化的蛋白质，叫做角蛋白。

But Bajadasaurus spine's made of the same keratin material as our horned animals of today.

但巴雅达龙的脊椎和我们今天的角化动物由同样的角蛋白材料制的。

Most of these reptiles have thick scales covered in keratin — the same material that makes up nails and claws.

大部分爬行动物有厚实的鳞，鳞上覆盖着角蛋白——角蛋白也指甲和爪子的相同物质。

These large protective scales are made of keratin, the same thing human nails and hair are made from.

这些巨大的保护鳞由角蛋白制的，分就像人类的指甲和头发。

They're made of a material called keratin, the same stuff that your hair and nails are made of.

它们由一种叫做角蛋白的材料的，与你的头发和指甲分相同。

Horse hooves are made of lots of thick layers of keratin put together that make them strong.

马蹄由很多厚厚的角蛋白层拼接而的，这使得它们非常坚固。

The rattle consists of hollow, interlocked segments made of keratin, the same substance that makes our nails and hair.

响环由角蛋白制的中空部分交错，与我们的指甲和头发一样的物质。

As they're pushed, the skin cells change into a protein called keratin that flattens and hardens into a nail.

当它们推出去时，皮肤细胞会变一种叫做角蛋白的蛋白质，这种蛋白质会变平变硬为指甲。

Those scales are made out of the same hard protein, called keratin, as the scales of pangolins and other animals.

这些鳞片由同样的硬蛋白的，叫做角蛋白，就像穿山甲和其他动物的鳞片一样。