What Exactly Is Hair Made Of?
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What Exactly Is Hair Made Of?

Our hair grows in so many different shades, places, hair textures, and types, that everyone’s mane is naturally unique. But when it comes to hair anatomy, all of our strands are essentially the same.

Even if you’ve already mastered your signature hairstyle and hair care routine, learning what your hair is made up of gives you more insight so you can take even better care of all your hair — not just the parts we can see. Below, we’re breaking down the basics of hair anatomy to help you care for your hair from the inside out.

What Is Human Hair Made Of?

Human hair is made from the protein keratin. Each strand of hair grows from a root located in the base of the hair follicle, which is composed of keratin cells. The keratin that makes up the major part of the hair is formed by amino acids molecules sourced from the food we eat. This protein is also found in our fingernails, toenails, and skin according to the American Academy of Dermatology (AAD). 


Source: L'Oréal

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