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  • This episode of "Life Noggin" is brought to you by AJ Plus.

  • Hi there, I'm Lago.

  • I might be an ageless animation, but you, on the other hand,

  • are getting older everyday. And with old age comes a lot of interesting changes.

  • It's Thursday, so that means we're answering one of your questions.

  • And this week, we're gonna find out why does hair turn gray with old age. Let's do this.

  • Let's figure out how hair gets its color in the first place. Hair, like the skin, gets

  • its color from a pigment called melanin.

  • Did you know that melanin formation happens before we were born?

  • Did you know that all hair is white before it grows?

  • Well, you do now. Dark pigments are called the eumelanin, and light pigments are called pheomelanin,

  • which blend together to create a broad spectrum of beautiful hair colors.

  • These pigments are composed of cells called melanocytes that are positioned on the

  • skin surface, which the hair follicles grow through.

  • Melanocytes inject melianin into cells that contain keratin, which the protein of hair is made up of.

  • There are many factors that can change the pigment of your hair, both internal and external,

  • things such as genetics, hormones, age, the climate that you live in, toxins

  • and even chemical exposure

  • can all affect hair pigmentation. I would check with your parents or grandparents

  • and find out when they went gray,

  • That's when you probably will too. As you grow older, your hair turns gray is the

  • result of fail management of melanin cells.

  • They may die or just function improperly. The less melanin you have the

  • grayer your hair becomes.

  • Each hair follicles grow separately and contains its own amount of melanin.

  • This is why certain hairs turn gray at different times. There's still no solid

  • proof as why this happens. More recent studies have shown that hair follicles

  • produce small amount of hydrogen peroxide,

  • which over time can lead to gradual loss of hair color. I personally would

  • take great care over a hairless blockhead any day.

  • Thank you so much for watching. As usual, I'll be answering a new question every Thursday.

  • So ask anything you wanna know in the comments on Facebook and Twitter.

  • If you like this video, you should definitely click the one that just popped up on the screen or

  • check the description for the link.

  • "Proof that the pudding is in the eating"

  • The meaning behind this expression is that to experience something to the

  • fullest you need to try it out yourself,

  • like pudding, try it, you'll like it. Unless you're allergic somehow.

This episode of "Life Noggin" is brought to you by AJ Plus.

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B2 US hair melanin gray pigment pudding grow

Why Your Hair Will Turn Gray

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    許允迪 posted on 2015/11/26
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