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Hi I'm Lauren and I'm here to share with you why curly hair is curly. Scientifically is
the best way to give an explanation as to why your hair would grow in curly and usually
it goes through a genetic gene as to where your proteins are lined up. Your hair is made
out of proteins and it's the interlocking of proteins which actually form your hair
cuticle and your hair structure from root to shaft. Actually your entire body is made
up of protein bonds. Two sulfur atoms that come together in those proteins are called
a disulfide bond. As your proteins attach, they attach into this disulfide bond. Now
the further that your atoms are away from each other, the easier it's going to be to
curl. So if your atom, if your one sulfur atom is a few inches away from your other
sulfur atom, what it's going to do is wind the hair in order to bring those two closer
together so that way they may connect and form that disulfide bond. Straighter hair,
usually your disulfide bonds are one right after the other and that's why you don't really
need to get much bend in order to bring those two atoms together in order to create the
bond. Perming hair is going to basically force that disulfide bond the waving motion actually
takes the bonds and rearranges them and it breaks up the bonds from your straight hair,
rearranges them and makes them further apart so that way those two sulfur atoms actually
have to connect with each other by winding around the rod. So curly hair is ultimately
just in the placement of your sulfur atoms and how far in length they need to go in order
to meet and create the disulfide bond which your hair is made out of. And that is why
curly hair is curly.